The atmospheric power unit, which in later versions was equipped with a compressor, released outdated precursors to replace. An inline four-cylinder engine was equipped with 16 valves. Atmospheric motors of this series were two: a 2-liter power of 136 liters. from. and a 2.2-liter power of 150 liters. from. Compressor were all versions, including E18 and E23.

Differences M111 E20.

ATTENTION! Found a completely simple way to reduce fuel consumption! Do not believe? Auto mechanic with 15 years old also did not believe, until he tried. And now it saves 35,000 rubles per year in gasoline!

The first of a series of engines. It was produced for a long time, well known to the owners of Mercedes C-class. In general, a very efficient and reliable unit, although having some problems.

From the very beginning of production was equipped with a full-fledged injector. While he did not change a constructively more advanced M271, the 2-liter M111 remained the best in the class.

1. The cylinder block was re-developed - also remained cast iron, but already with a new crankshaft and SPG.
2. M111 engine cylinder with two DOHC type camshafts and 16 valves that do not require manual setting of gaps.
3. Fuel injection and other important functions under the control of the Bosch ME1 electronic unit.
4. The timing chain is very reliable, there are more than 250 thousand km.

In 2000, atmospheric modification was restored. The SPG was replaced, which was prepared for increased compression. BCs strengthened by adding ribbon ribbon. The PC was finalized by changing the combustion chambers and channels, as well as the ignition coils. The transformations affected the fuel system that received new nozzles, other candles and an electronic choke. The replacement of Bosch Me 2.1 came the control unit from Siemens. The environmental friendliness of the new unit has increased to Euro 4.

The turbocharged (compressor) analog was used first Eaton M62 compressor. The turbo motor also underwent upgrades at the beginning of the new millennium. Instead of Eaton M62 installed a more advanced Eaton M45 compressor. It was also held up to one hundred other changes.

The M111 E20 engine was produced in various modifications.

Differences M111 2.3 liters

Senior representative of the family, which appeared in 1995. He replaced already outdated M102 with the same cylinder volume. New aggregate I got a compact BC from cast iron, but with a large diameter of cylinders than E20.

The rest of the motors are similar. The same GBC, the same hydraulic components and the Electrovip Bosch 2.1. Simultaneously with the atmospheric version, a turbo version that uses the Eaton M62 compressor was produced.

Like all representatives of the series, M111 E23 is restyled in 2000. Now the motor meets the new euro standards, instead of a powerful EATON M62 compressor, Eaton M45 is installed. Bosch Me 2.1 is replaced with Siemens Me-SIM4.

M111 E23 went out in several modifications.

The release of this engine was discontinued in 2006, when a compressor M271 E18 came to replace him.

Engine features M111 E18

The younger version of the row fourth family M111. Motor debuted in 1993, replacing outdated M102 with the same cylinder volume. The new unit is almost entirely similar to the 2-liter version of M111. A total of two modifications were released: 920 and 921. The control unit was placed from Bosch: the fuel injection was controlled by PMS or HFM.

Production of this engine is discontinued in 2000. Soon his place occupied M271.

That does not differ from the maintenance of standard motors of this class. It must be carried out at an interval of 10-15 thousand km.

Characteristic malfunctions

Row constructive features M111 series motors contributed to the appearance of characteristic problems.

1. The oil-changing caps on the old motor quickly wear out, which led to the jahor of the oil.
2. The structural inaccuracy of the air flow meter led to the loss of the power engine and the ability.
3. One of the engine supports was worn out, and then strong vibrations began.

Pros and cons

High reliability of M111 series engines is proven by practice. Pretty many cars still continue to ride with these motors, although they are structured constructively. But no explicit problems are not delivered to their owners.

So, these are the advantages of M111.

1. Good turned out the timing chain drive, capable of listening to the entire operational period. Especially the chain from the restyled version mounted on a qualitatively modified gas distribution mechanism.
2. M111 engine consumes some fuel and simultaneously pulls well.
3. Maintenance of this engine is inexpensive, the main thing is to fill fresh oil in a timely manner. It is advisable to do it at the mark of 7 thousand km run.

And here is the cons.

• 20-year-old units, you want no you want, will require regular trips to a hundred.
• Due to weak glands and gaskets, oil flows. This problem Characteristic almost for all M series engines
• Due to the damage of the air flow meter, it is possible to increase the consumption of gasoline and reduced traction.
• The engine is noisy compared to competitors.
• PMS type injector is extremely sensitive to wet climate, does not tolerate temperature differences.

The best versions of 2 liters, developing 136 liters, were bought. from.

To replace technically outdated M102 in 1992, the Germans began to issue a completely new gasoline motor M111. Much attention was paid to fuel injection and ignition systems, now they had electronic control. Compared to the predecessor, the engine has become more compact, but the block is also made of cast iron, and the head of the alloy metal.

Main innovations and advantages of the power unit

According to the reviews of the owners, you can say for sure that * 111 Mercedes engine * is one of the most reliable and successful, which is confirmed by operational terms. Engineering solutions are applied on this unit:

• hydraulic pushers;
• 4-valve mechanism of the head of the cylinder block;
• electronic fuel injection control;
• two camshafts.

Technology of using 4 valves in conjunction with electronically control Allowed to significantly reduce fuel consumption, but at the same time increase the performance of the motor.

HFM - Mercedes Series 111 Engine Injection and Ignition System 111

Three years later, in 1995 for the 230 E series design power plant It was improved. The main refinement was to create a HFM system, the essence of which is to control the unit with a hot fuel flow meter. In its electronic unit, such functions are focused:

• ignition;
• injection;
• stabilization idle move;
• electronic gas pedal;
• anti-theft system;
• problem faults.

Injection is carried out through electromagnetic nozzles, to which a certain dose of combustible mixture is supplied. Its quantity is determined by a number of parameters:

• the position of the throttle;
• speed crankshaft;
• the temperature of the suction air;
• coolant temperature;
• air mass.

The high voltage distribution in the ignition system occurs without any movable parts - directly from the HFM unit to the ignition coils. At the same time, two candles operate from one coil. The design of the * 111th engine of Mercedes is so thought out that even when the air flow meter fails, the system continues to operate, producing a replacement signal depending on the revolutions and the position of the flap.

Modifications of power plant

The unit was performed in various variations in power and volume. Modernized copies of the Mercedes motor are popularly known and still popular:

• M 111 with the roots supercharger;
• M 111 EVO.

The mechanical supercharge system with the use of the Rott brothers rotor pump allowed 25% to increase torque indicators. Cars for which two types of superchargers were installed - Eaton M62 and M45, got the prefix "Kompressor". The difference between them was that the first version of the pump worked with interruptions and connected with the help of an electromagnetic clutch, while the second - functioned in the system constantly.

As you know, the Germans are constantly progressing in the technical sphere. At the turn of the century, the engine survived a serious reconstruction, having received an EVO (Evolution) console. More than 150 design components have been changed, among them:

• the cylinder block is equipped with rigidity ribs to reduce noise and vibrations;
• refusal to the electromagnetic coupling and using the EATON M45 pump;
• in order to increase the compression ratio changed the design of the shape of the piston;
• each candle got along the ignition coil;
• lack of reverse drain and new Siemens nozzles;
• new intake manifold design with damping system;
• installed onboard diagnostics OBD-II;
• rubber coating of stars chain drive.

Angle angle in * Engine M 111 Mercedes engineers * decided to form an electronic system for each cylinder separately. An important role is also played by the detonation prevention scheme, acting adaptively. Iridia candles guarantee uninterrupted work for 100,000 km run.

What cars Mercedes-Benz installed M111 motor

Depending on the packages, this power plant was installed on such a series:

• C-Class - W / S 202;
• C-Class - W / S 203;
• C-class SportCoupe (Cl 203);
• CLK-CLASS - C / A 208;
• SLK class - R 170;
• E-class - W / S / C / A 124;
• E-class - w / s 210;
• M-Class - W163;
• V-Class, Vito - W 638;
• SPRINTER - W 901-905;
• VW LT.

Among domestic motorists, the family of 111 engines deserved only positive reviews Due to its reliability and high maintainability. Even at the present time, it looks enough fresh and technically perfect. Since 2002, Stuttgardians released the next generation into the series power aggregates - M 271, which has already used an aluminum block of cylinders.

One of the most prestigious cars in Russia is the end of the last century, Mercedes was considered. Its owner could be only a very wealthy person. Such a luxury could afford either the influential members of criminal groups, rejected by illegally, or higher rank officials, whose income also had a dubious origin.

In a word, such a car was considered evidence of considerable prosperity. Today, Mercedes on the streets of Russian cities became the phenomenon as usual as domestic Muscovites and Zhiguli.

Power units were installed on the cars of the popular series different species. The most successful version of the engine equipping Mercedes is M111. Consider a details atmospheric modification of such an installation.

Atmospheric 111 Motor Mercedes. Characteristics, benefits and flaws

M111 The model of the power unit placed in the body of Mercedes Benz began to be produced by German manufacturers since 1992. For the period up to 2006, when its manufacture was discontinued, significant changes occurred in the design due to the modernization and multiple improvement of the installation.

Motor, equipped with an additional superchard system using the mechanical energy of compressors, used greatly popular with motorists around the world. To the title of a car equipped with a similar engine, a Kompressor prefix was added. Such models M111 had two varieties:

1. from permanent drive Compressor shaft - M45;
2. with the power supply of the shaft connected by a special clutch with electromagnetic properties - M62.

An example of such a motor is M111 E23 with a volume of 2.3 l and a capacity of 193 of full horses. It was launched in production from the beginning of 1995.

The year 2000 was marked by a grand modernization expressed by a change in the design of a huge number of parts. The design bureau has improved the device more than 150 elements. The updated unit was called M111-EVO.

The most first modifications of the Motor brand under consideration were atmospheric. The manufacturers made two of their varieties that differ in volume and power. Operational indicators of each of them are the object of the upcoming study.

Characteristics M111E20.

The beginning of production is considered to be 1992. This engine worked 124 Mercedes. The power unit has four working cylinder workers in the same line.

It will be interesting to know that the engine M111 of this modification is one of the firstuse the four valve system of gas distribution.

Concerning technical indicators The Mercedes M111 of the atmospheric type power unit under consideration, they are as follows:

1. the working space of each of the four cylinders, the diameter of which is 89.9 mm, accommodates the 1993 cm3 of the fuel mixture;
2. the piston makes a useful work in a progressive movement at a distance of 78.7 mm;
3. for the engine of such a modification, M111 of the characteristic value of the compression is considered to be the indicator 9.6;
4. upon reaching crankshaft Rotation frequencies of 5,500 revolutions per minute by a power unit develops a capacity of 136 horsepower;
5. for overclocking up to 100 km / h, the car with such a motor is required only 11 s;
6. the above power allows Mercedes with the M111 engine of the reservoir speed of 200 km / h. At least, the indicators are characterized by Mercedes W124;
7. the measured unhurried ride on the protracted urban streets requires a flow rate of 11 liters of gasoline AI-95, when moving along the open highway, the motor absorbs 7 liters of fuel.

Comparative security for ambient The power unit M111 of the release of the 90s ensures compliance with the regulatory requirements of Euro-4. Of course, this is possible when using the recommended fuel brand.

Operational qualities M111 E22

Similar to S. previous version Motor design must have identical indicators. However, they differ due to the difference of volumes. When reviewing 111 E22 Motor Mercedes W124, the following are observed specificationsspecified by the manufacturer in the accompanying documentation:

1. the capacity of the functional space is 2.2 liters;
2. inside the cylinder with a cross section 89.9 mm piston performs a working stroke in 86.6 mm;
3. due to the increase in volume, the power of the power plant, reaching the indicator in 150 hp, with a similar to the previous execution of the engine speed of the crankshaft;
4. a greater value is characterized by a compression ratio expressed by Number 10;
5. with such a car, the car can accelerate to 100 km / h for a negligible time, or rather for 10.5 seconds;
6. the manufacturer is laid maximum speed 210 km / h, which is very attractive quality for domestic libraries;
7. despite increased costs On the engine refueling internal combustion Due to the use of expensive AI-95, the power unit pleases the consumers with its economy due to the small consumption of fuel. Motor consumes 10 liters of gasoline when moving around the city and 7 liters on the free track.

Of course, the proposed description refers to normally functioning engines. By deviations of the listed parameters, you can determine that there are some malfunctions in the unit.

Advantages and shortcomings of atmospheric M111

Despite the fact that such aggregates have long been removed from production, they meet on the roads today, and in fairly large quantities. The motors of the first considered category M111 E20 were specially popular. Such devotion from drivers engines won due to indisputable advantages, namely:

• emergency reliability confirmed by many years of trouble-free operation;
• increased service life of the gas distribution mechanism due to chain type drive. However, it is preferable to use the updated version of the MRM, which was subjected to significant improvement and modernization, acquiring priority characteristics compared with the original system;
• an acceptable fuel flow rate does not have a negative effect on the dynamic abilities of the power unit;
• availability and comparative cheap service. Prerequisite To do this, is the timely replacement of lubricant substance and use motor oil According to the manufacturer's recommendations set forth in the attached technical documentation.

Unfortunately, it did not cost without flaws. The probable reason can be considered the lack of displacement of the design bureau that produces M111 motors. The main shortcomings are:

• possible oil leakage caused by a worn gasket of the GBC, which is not surprising with more than a 20-year period of operation. This malfunction is easily eliminated due to the elementary replacement of the unsuitable part;
• the fault of the problem in the air flow meter increases the amount of fuel consumed, accompanied by an annoying power drop. The problem is considered solved after replacing a faulty device;
• some drivers scare some noble during operation. However, sound support atmospheric engines M111 is significantly inferior to a loud vase.

MERCEDES-BENZ engine M111 was produced from 1992 to 2006 and is one of the most common and successful models of the company. Naturally, in the process of release, the engine has been modernized many times and improved.

The widespread engine was widely equipped with a mechanical supercharge system type ruts. Such cars got in the title to the console Kompressor and in different time They were equipped with two models of the EATON M62 and M45 mechanical compressor. The differences between them was the drive of the compressor shaft: permanent M45 or connected, using an electromagnetic coupling, M62.

In 2000, the engine survived a solid modernization, resulting in a thoroughly processed design of more than 150 parts. As a result, the upgraded engine received the designation M111 EVO (Evolution - evolution, further development).

Main changes in engine design:
- Bracket fastening generator, compressor and tensioner roller raised by 15 mm, to adapt to the change in the engine cylinder block;

The bracket (1) of the fastening of the generator (2), compressor (3) and the stretch roller (4) was adapted to changes in the engine cylinder block. As a result, the place of installation of these aggregates has changed, as well as the length of the polyclinic belt. The new length is 1355 mm. The compressor drive is still carried out by a separate polyclinite belt.

The cylinder block is supplemented with rigidity ribs to reduce noise, to install a new 6-speed gearbox, the fastening flange is increased;
- Using the EATON M45 compressor for mechanical supervision engines, which has a significantly reduced level of noise of bearings. From the electromagnetic coupling of the compressor, it is decided to refuse, because of the desire to reduce the weight of the engine and the increased noise of the operation of the drive at idle;

Mechanical compressor Eaton M45. Appearance The compressor installed on the car may differ from the above.

Emissions harmful substances with spent gases comply with Euro-4 standards;
- modified, very compact form of combustion chamber;
- Channels in the head of the cylinder block are optimized with aerodynamic characteristics, which improved the filling of cylinders, the cross-section of the channels oval;
- changed the shape of the bottom of the piston to increase the degree of compression;
- Use of connecting rods with a given fracture line. The connecting rod is made as a single wrought detail and has a predetermined fracture line on the bottom head, on which it is broken, only after that the surface surface is processed. This event increases the accuracy of the connection;

The rod with a given linte of a break.

Siemens engine control system (ME-SIM4);
- Individual ignition coils;
- position sensor distribution Vala. for 1 cylinder for optimal ignition during cold start and to determine the state of the camshaft phase
- fast launch function;
- reduced time to achieve a catalyst for operating temperature;
- New fuel injectors Siemens firms fuel system It is distinguished by the absence of reverse plum (M111.958 / 983) and a new pressure damper;

1 - oil separator; 2 - executive electromagnet mechanism for changing phases of gas distribution; 3 - thermal film flow meter; 4 - servo recirculation damper; 5 - Sensor (Hall) position of the camshaft; 6 - housing air filter; 7 - Mechanical compressor.

Throttle with electronic control of the BOSCH company with feedback;
- the inlet reservoir design is completely revised: the new noise absorber is applied in the form of perforated partitions and plastic chambers, a special damping damper of air flow was introduced, a new multi-chamber damper was used to reduce the noise level;
- all parts inside the cylinder block are re-designed;
- Curved pallet with high height of walls and ribbed structure;
- the oil separator is introduced;

In the electron throttle, in the regulatory valve area, a channel is made in which the liquid circulates from the cooling system;
- a new oil level sensor in the engine crankcase associated with the ASSYST system;
- the secondary air passes through the thermofiled air flow meter instead of direct feeding into the supercharger;
- The formation of the ignition advance angle is carried out for each cylinder and each working cycle separately, adaptive control system for preventing detonation combustion, double adaptive lambda regulation;
- Used on-board-diagnose on-board-diagnose (OBD-II) system;
- iridiya candles ignition with increased to 100,000 km replacement interval;
- to reduce noise when the chain drive operation, all stars have a rubberized coating;
- Additional edges are made on the crankcase;

Application:

Engine MERCEDES-BENZ M111 E20 / E20 ML 2.0 l.

Engine characteristics M111

Reliability, problems and repair of the engine Mercedes M111 E20 2.0 l.

The new engine M111 E20 appeared in 1992 and gave the following series of Mercedes four-cylinder motors (which included M111 E18, M111 E22 and M111 E23), M111 E20 replaced outdated M102 E20. For this generation of power units, a compact cast iron block of cylinders was re-developed, with a new crankshaft, a connecting rod-piston group and other.
The head of the cylinder block is now 16-valve with two camshafts (DOHC), with hydrocomathers and electronic fuel injection. The diameter of the inlet valves is 35 mm, graduation 31 mm. Together with the atmospheric option, the compressor version of the M111 E20 ML was produced, where the EATON M62 compressor was used as a supercharger. The timing chain drive, the resource of this chain is about 250 thousand km. Bosch Me 2.1 engine control system.
In 2000, the series was modified, in an updated engine, rods and pistons were replaced under an increased compression ratio, a cylinder block with stiffeners, refined with CHC with modified combustion chambers and channels, individual grinding coils, a refined fuel system with new nozzles, other candles, electronic throttle The damper, enhanced ecology to Euro 4, compressor versions instead of Eaton M62 received the EATON M45 supercharger and more than 100 other changes received engines to the name of which the EVO designation was added. The engine control system is replaced with Siemens ME-SIM4.

In 2002, Mercedes-Benz introduced the next generation, the further development of the family of row fours under the name M271 and during two years M111 E20 ML lost to the new M271 E18 ML, with a 1.8 liter working volume.

M111 E20 Engine Modifications

1. M111.940 (1992 - 1998) - the first version with a capacity of 136 hp At 5500 rpm, torque 190 nm at 4000 rpm, compression ratio 10.4, PMS injection. Put on Mercedes-Benz E200 W124 / W210, C200 W202.
2. M111.941 (1994 - 2000.) - Analog M111.940 with Bosch Motronic. Put on Mercedes-Benz C200 W202.
3. M111.942 (1995 - 2000.) - Analog M111.940 with an HFM injection. Put on Mercedes-Benz E200 W210.
4. M111.943 (1996 - 2000 GV) - version M111.940 with Eaton M62 compressor, pressure up to 0.5 bar, compression ratio reduced to 8.5, power 192 hp at 5300 rpm, torque 270 nm at 2500 rpm. Put on Mercedes-Benz SLK 200 kompressor R170.
5. M111.944 (1996 - 2000 GV) - version M111.943 for Mercedes-Benz CLK 200 Kompressor C208 and C 200 Kompressor W202.
6. M111.945 (1994 - 2002 G.V.) - version M111.942 for Mercedes-Benz CLK 200 C208 and C 200 W202.
7. M111.946 (1996 - 2000 G.V.) - version M111.945 for Mercedes-Benz SLK 200 R170.
8. M111.947 (1997 - 2002 GV) - Compressor modification with a capacity of 186 hp at 5300 rpm, torque 260 nm at 2500 rpm, compression ratio 8.5. Put on Mercedes-Benz E200 Kompressor W210.
9. M111.948 (1995 - 2000) - atmospheric option for Mercedes-Benz V 200 W638 with Injection Siemens PMS, compression ratio reduced to 9.6, Power 129 hp At 5100 rpm, torque is 186 nm at 3600 rpm.
10. M111.950 (1995 - 2000 GV) - analogue of M111.948 with an HFM injection.
11. M111.951 (2000 - 2002 G.V.) - Restyled EVO motor, compression ratio 10.6, Power 129 hp At 5500 rpm, torque 190 nm at 4000 rpm. The engine was intended for Mercedes-Benz C 180 W203.
12. M1111.955 (2000 - 2002 G.V.) - Compressor analogue M111.951, EATON M45 supercharger, pressure 0.37 bar, compression ratio 9.5, Power 163 hp at 5300 rpm, torque 230 nm at 2500 rpm. The engine was intended for Mercedes-Benz C 200 Kompressor W203, CLK 200 Kompressor C208 and E 200 Kompressor W210.

Problems and disadvantages of Mercedes M111 E20 2 l.

1. Leaves of oil. Popular problem On the 111st series, the reason is wear gBC pads And the fault is treated with its replacement.
2. Power loss, high fuel consumption. The root of evil in the flow meter of the air, which lives about 100 thousand km. Replace it and the situation will be corrected for the better.
In addition, M111 engines are distinguished by noisy work, the ignition candles live for a short time (about 20 thousand km), the pump lives about 100 thousand km, after 200 thousand km is a great chance of wear skirts, often appear cracks in the graduate manifold. To this, add the fact that most of these engines are absolutely worn out and departure all their considerable motor expansion, therefore any age complications can be added to the above problems. To minimize such trouble, it is necessary to use only high-quality fluids and regularly carry out maintenance.

Tuning engine Mercedes M111

Compressor

The most rational to refine the initially powerful compressor version of the M111 E20 ML, where the pulley of the supercharger changes to the tuning, the new sports firmware is set and the power increases to ~ 210 hp. With the replacement of the exhaust to sports, we will get more aggressive sound support, which increases the feeling of increased speakers, along with this, about 5-10 hp will be added. It is not so profitable to put the turbine instead of the compressor, for half the engine will go under the replacement. Much easier to buy powerful contract Engine Mercedes V6. The same applies to tuning the usual atmospheric M111 E20, it is not even worth spending time, only replacement for a powerful motor.