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following series of Mercedes four-cylinder motors (which included M111 E18, M111 E22 and M111 E23), M111 E20 replaced outdated M102 E20.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 rigidity fins, refined with CHC with modified combustion chambers and channels, individual grinding coils, refined fuel system with new nozzles, other candles, electronic throttle valve, Environmentally friendly to Euro 4 level, compressor versions instead of Eaton M62 received Eaton M45 supercharger and more than 100 other changes received engines to the name of which 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.

Atmospheric force aggregatewhich in later versions were 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.

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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.

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;
- the position of the camshaft position for 1 cylinder for the purpose of optimal ignition during cold start and to determine the state of the camshaft phasemaker;
- fast launch function;
- reduced time to achieve a catalyst for operating temperature;
- New fuel injectors Siemens firms, the fuel system is distinguished by the absence of reverse plum (M111.958 / 983) and the 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 C. electronically control BOSCH firms 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:

In 1995, the last and most surplus engine was released in M111 motor line - this is a 2.3 liter engine M111 E23. It was intended to change perfectly obsolete on M102 E23 engineering technologies. At the heart of the E23 cast iron cylinder block, with cylinder diameters of 90.9 mm., Piston stroke increased to 88.4mm, which is 7.9 mm. More than in version with 2.0 liters. In essence, it is the same 2-liter E20 engine, but slightly upgraded ... GBC, two distributive shaft, four valves for each cylinder, hydrocompensators, chain drive GD, ECU from Bosch ME2.1 - all these are the same components as on the E20. Even the E23ML compressor version had the same EATON M62 compressor with a mechanical supercharger, which was driven by a drive belt through an electromagnetic clutch.

The M111 E23ML EVO compressor engine was installed on cars until 2004, atmospheric engine M111 E23 in the modification M111.970 (74) is still manufactured, the truth in Korea, but under license and under the control of Daimler AG for ssangYong cars. In 2006, the M111E23ML compressor motor change came absolutely new Motor From the M271 - E18ML series, the cylinder block of which was made of aluminum alloy, but with cast iron sleeves.

Modifications (models) DVS M111E23:

I. M111.970 (From 1995 to 1998) - the very first modification with a capacity of 150 horses under the hood at 5,400 revolutions per minute., Kr.Moment 220 nm at 3700-4500 rpm, st. Signs are 10.4 units, injection and ignition system Bosch HFM. Installed on the MB E230 model in the Body W210 and SsangYong Musso;

II. M111.973 (From 1996 to 2000) - Modification with the Eaton M62 compressor, which gave 193 horsepower at 5500 rpm., As well as torque in 280 nm at 2500-5000 rpm. Art. compression 8.5 units, installed on the MB SLK230 model compressor in the Body R170;

III. M111.974 (from 1995 by N.V.) - one of the modifications of the M111.970 motor with a capacity of 150l.s. For MB C230 in the Body W202 and SsangYong Kyron;

IV. M111.975 (from 1996 to 2000) - Motor modification M111.973 from 193 hp Under the hood for the MB CLK230 compressor in the body W208 and C230 in the Body W202;

V. M111.977 (from 1998 to 2000) - another modification of M111.970 as well with 150 horsepower for MB ML230 in the Body W163;

Vi. M111.978. (From 1995 to 2003) - Special modification for MB Vito 230 in the body W638, Art. Compression is reduced to 8.8 units, injection and ignition system Siemens PMS, power of DVS 143 horsepower at 5000 revolutions per minute, cr. Moment 215nm at 3500 rpm;

VII. M111.979 (From 1995 to 2006) - Motor modification M111.978 as well as 143 hp For MB Sprinter in the Body W901-905;

VIII. M111.980 (From 1996 to 2003) - another modification of the M111.978 M111.978 with the injection and ignition system Bosch HFM and from 143 hp For MB Vito 230 in the Body W638;

IX. M111.981 (from 2001 to 2004) - Motor modification with Eaton M45 compressor, st. Press is 9.0, power is 197 horsepower at 5500 rpm, Kr.Moment 280 nm at 2500 rpm. This modification was established on Mercedes Benz SLK230 Compressor in the Body R170.

X. M111.982. (from 2000 to 2002) - Power 197 hp Installed on CLK230 Cars CLK230 Compressor in the Body W208;

MERCEDES-BENZ M111 E23 / E23 ML engine

Engine characteristics M111

Reliability, problems and repair of the engine Mercedes M111 2.3 l.

Another senior representative of the M111 family (it included another M111 E18, M111 E20 and M111 E22) appeared in 1995 and replaced the last 2.3-liter M102 E23, which is completely outdated to this point and did not comply with the spirit of the times. The new M111 E23 was acquired by a compact cast-iron cylinder block, as on M111 E20, but with an increase in 1 mm diameter of cylinders (89.9 mm) and another crankshaft, with an increased up to 88.4 mm piston running, relative to E20.
The head of the cylinder block is the same as on a two-liter related power unit,with two camshafts and 16 valves, hydrocomathers and electronic fuel injection. In parallel with the atmosphere, the compressor option was also produced on which the Eaton M62 supercharger was used. In P.rododa GDM used chain with a resource of about 250 thousand km. Bosch Me 2.1 engine control system.
5 years after launching in production, the entire series of M111 was subjected to deep modifications, in new versions there is a cylinder block with rigidity ribs, a new connecting rod-piston group, increased the degree of compression, the combustion chamber and CHC channels are improved, individual grinding coils are changed, the fuel system has changed With other nozzles, the candles are replaced, an electronic throttle is introduced, the environmental indicators are improved to the euro 4 class, instead of the EATON M62 compressor installed the EATON M45 supercharger and another number of other smaller changes (total quantity 100+). You can distinguish new engines by designation EVO and year of issue, namely under 2000.
The engine control system is replaced with Siemens ME-SIM4.

The release of M111 E23 continued until 2006, when he finally gave way to a new compressor M271 E18 ML.

M111 E23 engines modifications

1. M111.970 (1995 - 2005) - the first version with a capacity of 150 hp At 5400 rpm, torque 220 nm at 3700 rpm, compression ratio 10.4, HFM injection. Put on Mercedes-Benz E230 W210 and SsangYong Musso.
2. M1111.973 (1996 - 2000.) - compressor version with Eaton M62 supercharger, compression ratio 8.8, Power 193 l.S. At 5300 rpm, torque 280 nm at 2500 rpm. . Put on Mercedes-Benz SLK 230 Kompressor R170.
3. M111.974 (1994 - N.V.) - Analog M111.970 for Mercedes-Benz C230 W202 and SsangYong Kyron, Rexton.
4. M111.975 (1996 - 2000.) - Analog M111.973 for Mercedes-Benz CLK 230 KOMPRESSOR C208.
5. M111.977 (1998 - 2000 GV) - version M111.970 for Mercedes-Benz ML 230 W163.
6. M111.978 (1995 - 2003 G.V.) - version for Mercedes-Benz V 230 W638, compression ratio reduced to 8.8, PMS injection, power 143 hp at 5000 rpm, torque 215 nm at 3500 rpm.
7. M111.979 (1995 - 2006.) - Analogue M111.978 for Mercedes-Benz Sprinter W901-905.
8. M111.980 (1995 - 2003) - Analog M111.978 with HFM injection for Mercedes-Benz V 230 W638
9. M111.981 (2001 - 2002 G.V.) - compressor version with EATON M45 supercharger, compression ratio 9, Power 197 hp at 5500 rpm, torque 280 nm at 2500 rpm. Put on Mercedes-Benz E 230 Kompressor W210, SLK 230 Kompressor R170.
10. M111.984 (1995 - 2006.) - Analogue M111.979 with HFM injection for Mercedes-Benz Sprinter and Volkswagen LT.

Problems and disadvantages of MERCEDES-BENZ M111 2.3 l engines.

This power point Similar to M111 E20 and its problems are the same as in the younger counterfeit, you can read about them.

Engine tuning Mercedes M111 E23

Compressor

Conduct manipulations to increase the engine power only makes sense with the compressor version, as it is not profitable to do anything with the weather atmospheric and it is much simpler instead of buying another powerful MERCEDES-BENZ engine. In the M111 E23 ML version, you can replace the compressor pulley, flash the corresponding sports firmware and get about 230 hp. Together with sports exhaust, the return can be raised to 240 hp, move on on the 111st engine no sense, it is easier to replace to more powerful.