Mercedes-Benz M 110 six-cylinder petrol engine
|Engines:||2.8 liters (2746 cm³)|
|Previous model:||M 130 / 114|
The M 110 is a DOHC series six-cylinder petrol engine from Mercedes-Benz , which was built from 1972 to 1989 in car of the brand. He replaced the M 130 with mechanical Bosch injection and is the last development stage of the "basic engine" M 180 , which had been presented in 1951 in the type 220 . Except for the modified block, however, he bears no resemblance to his ancestor.
The main difference lies in the aluminum cross-flow cylinder head , two camshafts and hemispherical combustion chambers, which have been introduced to better position themselves in comparison to competing vehicles such as the BMW 2800 and the Opel Commodore . This and the use of the Bosch D-Jetronic makes the M 110 18 kW / 25 hp (from 118 kW / 160 to 136 kW / 185 hp) more than its predecessor M 130 with the same displacement.
The engine was presented in the small series / 8 and W 114 in April 1972, the new S-Class was from the beginning (September 1972) thus available. From August 1974, he was offered in the SL in addition to the V8 engines. In the G-model , the M 110 was the top engine until 1989. When 1971, the decision for mass production of the M 110 fell, its successor was already in development. This engine M 103 should actually be presented in 1976 with the 123 series . In the event that he would not be ready until then, approved the board for the transitional period, the M 110th However, the M 103 was only 1984 in the 124 series The five-year provisional had become a standard for seventeen years.
The motor M 110 has an engine block made of cast iron and a seven-bearing crankshaft . It is the first production engine from Daimler-Benz with two overheadcamshafts. The V-shaped hanging valves are operated by drag levers.
Together with the 1971 modernized eight-cylinder V-engine M 116 in the 350 (SL, SLC and SE) is the M 110 engine in its injection version, the second generation Mercedes engine with electronic injection technology (Bosch D-Jetronic ); the first Mercedes engine with this injection was the 250CE / 8 of 1969. The previously built injection engines are all mechanically controlled at Mercedes. From 1976, the M 110 was built with the mechanical-hydraulic Bosch K-Jetronic .
Due to the lower moving masses and the better mass balance, the M 110 had become more speed-resistant than the predecessors. Due to the clairaudient aluminum of the cylinder head and the large number of moving parts such as rocker arms and a guide of the duplex timing chain via a pulley arise strange tinkling and Klackergeräusche. The M 110 engines are therefore nicknamed " Schellenbaum engine".
The construction of the engine with oil sump, cylinder block, cylinder head, camshaft case and valve cover requires a variety of seals.
The engines are more revving and endure even high speeds over a long time. Previous MB six-cylinder engines had previously been criticized for their sluggishness and reluctance to high speeds. This criticism Mercedes-Benz silenced with this engine. Although you expect more torque in the lower rpm range, you will be compensated for in the upper range with respectable performance. With a specific power of 49.5 kW / l (67.4 hp / l), the 280 E / 8 is over 200 km / h fast and accelerates from 0 to 100 km / h in 9.5 seconds.
Initially, the engine type M 110 was built for the parallel built 280 and 280 S (without the "E") with double register carburettor Solex 4A1 (ie without injection system). These carburetor engines quickly came into disrepute because of their high consumption. The injectors consistently consume about two to three liters less gasoline and also provide depending on the type 15 to 21 kW more.
The engine type M 110 is the last and with the copies with 136 kW (185 HP) also the strongest model of the 1951 for the model Mercedes 220 with the engine M 180started inline six-cylinder design concept. With a construction period of more than 30 years, it is one of the most successful and long-lasting of all engine families. As recently as 2007, hundreds of thousands of these engines were on the roads of the world. With its 2.8 liter capacity even for heavy cars sufficient power, with its revving due to the cylinder head with double camshafts and with its smooth running as a well-balanced six-cylinder, it still has pleasant operating characteristics today. However, it is measured at today's standards with a consumption of min. 12 liters per 100 km no more economical engine. The exhaust gas values are only acceptable when operated with catalyst. However, in many old-timers and young-timers in different countries, the engine continues to enjoy great popularity due to its reliability and power delivery. The operation of these engines with economical and very cleanHowever, from the point of view of engine specialists and Mercedes-Benz authorized repair shops, LPG gas systems are not recommended, since the valve seats of this engine series are sufficiently hardened for operation with unleaded gasoline, but not for operation with LPG . However, the use of a fuel or gas additive, the reduced by the gas operation valve seat lubrication and higher combustion temperatures at the valves can be compensated again.
Common to all variants:
- Bore 86 mm
- Stroke 78.8 mm
- Capacity 2746 cm³
M 110.921 / M 110.931
- 1972-1976 280
- 1972-1976 280 C
M 110.922 / M 110.932
The version .932 is the less compact version of the .922.
Power .922: 118 kW (160 hp) at 5500 rpm
Power .932: 107 kW (145 hp) at 5500 rpm.
- 1972-1980 280 p
Power: 115 kW (156 hp) at 5500 rpm, or 105 kW (143 hp) at 5500 rpm for the less compacted variant.
- 1975-1981 280
- 1975-1981 280 C
Power: 115 kW (156 hp) at 5500 rpm, or 105 kW (143 hp) at 5500 rpm for the low-compression version.
- 1979-1985 280 p
Power: 115 kW (156 hp) at 5500 rpm, or (105 kW) 143 hp at 5500 rpm for the low-compression variant.
Use: 09 / 1972-09 / 1980 in the series 116 | 280 S 10 / 1980-1985 Mercedes-Benz in the 126 | 280 p
In the last variant of the M 110 carburetor engine could be reduced by improvements to the engine and carburetor fuel consumption by 10%.
|working procedures||Four stroke - Otto|
|arrangement||standing lengthwise in front|
|Type / model||M 110 V28 / 110.924M from 10.81 110.926|
|Number and arrangement of cylinders||6 / series|
|Bore × stroke||86.0 × 78.8 mm|
|total displacement||2746 cm³ (according to tax formula 2717 cm³)|
|compression ratio||9.0: 1|
|power||156 hp / 115 kW at 5500 rpm|
|torque||223 Nm at 4000 rpm|
|Valve number and arrangement||1 inlet valve, 1 outlet valve, V-shaped hanging|
|valve control||two overhead camshafts ( DOHC )|
|camshaft drive||Duplex roller chain|
|mixture formation||1 double register carburettor Solex type 4A1|
M 110.981 / M 110.991
The M 110.981 contains the Bosch D-Jetronic injection system. This system determines based on the values of ambient temperature, engine temperature, intake manifold vacuum and throttle position and calculates with an analog control unit the injection duration of the electromagnetically controlled injectors.
The .991 is the low-compression version of the .981.
Power .981: 136 kW (185 hp) at 6000 rpm
.991: 125 kW (170 hp) at 6000 rpm
- 1972-1976 280 E
- 1972-1976 280 CE
M 110.982 / M 110.992
The .992 is the low-compression version of the .982.
Power .982: 136 kW (185 hp) at 6000 rpm.
Power .992: 125 kW (170 hp) at 6000 rpm.
- 1973-1976 280 SL
- 1973-1976 280 SLC
M 110.983 / M 110.993
The .993 is the low-compression version of the .983.
Power of the .983: 136 kW (185 hp) at 6000 rpm.
Power of .993: 125 kW (170 hp) at 6000 / min.
- 1972-1975 280 SE
- 1972-1975 280 SEL
The M 110.984 was the first engine with the new Bosch K-Jetronic injection.
Compaction 8,7: 1
Power: 130 kW (177 hp) at 6000 rpm until April 1978; 185 hp (136 kW) at 5800 rpm from April 1978.
Torque: 234 Nm at 4500 rpm
- 1976-1981 280 E
- 1977-1981 280 CE
- 1978-1981 280 TE
Power: 130 kW (177 hp) at 6000 rpm until April 1978; 185 hp (136 kW) at 5800 rpm from April 1978
- 1976-1980 280 SE
- 1976-1980 280 SEL
Power: 130 kW (177 hp) at 6000 rpm until April 1978; 136 kW (185 hp) at 5800 rpm from April 1978.
- 1976-1981 280 SL
- 1976-1981 280 SLC
Power: 136 kW (185 hp) at 5800 rpm.
- 1979-09 / 1981 280 SE
- 1979-09 / 1981 280 SEL
Power: 136 kW (185 hp) at 5800 rpm
Torque: 240 Nm at 4500 rpm
Compression: 9.0: 1
Maximum speed: 6600 rpm
Consumption: 12.5 l / 100 km
- 1978-1986 280 E
- 1978-1986 280 TE
- 1978-1986 280 CE
Power: 136 kW (185 hp) at 5800 rpm
- 10 / 1981-1985 280 SE
- 10 / 1981-1985 280 SEL
Power: 136 kW (185 hp) at 5800 rpm.
- 1981-1985 280 SL
- also called M 110,010 in exchange
Especially for G-Class / K-Jetronic .
Power: 115 kW (156 hp) at 5250 rpm until 1984; 110 kW (150 hp) at 5250 rpm from 1984. Torque: 226 Nm at 4250 rpm
- 1981-1989 280 GE