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Mercedes-Benz OM621 Engine
The OM621 is an inline-four diesel engine produced by Mercedes-Benz from 1956 to 1968, variously in displacements of 1.9 L (115.8 cu in), 2.0 (121.3 cu in), and 2.2 L (134.1 cu in). It was preceded by the OM636, and succeeded by the OM615. Design The OM621 is based on the petrol M121 engine, but features revised camshafts, cylinder head, pistons, and fuel injection system. In 1961, the engine capacity was increased to and power was uprated to for use in the newly introduced W110 models. After being replaced by the OM615, a updated version of the OM621 engine was used solely in Unimog The Unimog (pronunciation in American English: ''YOU-nuh-mog''; British English: ''YOU-knee-mog''; German: , ) is a Daimler Truck line of multi-purpose, highly offroad capable AWD vehicles produced since 1948. Utilizing engine-driven power tak ... vehicles until 1988. Models OM621 (37 kW version) * 1958–1959 W121 190D, 190Db OM621 (35 kW version) * 1961–1962 W120 180Dc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes-Benz
Mercedes-Benz (), commonly referred to simply as Mercedes and occasionally as Benz, is a German automotive brand that was founded in 1926. Mercedes-Benz AG (a subsidiary of the Mercedes-Benz Group, established in 2019) is based in Stuttgart, Baden-Württemberg, Germany. Mercedes-Benz AG manufactures luxury vehicles and light commercial vehicles, all branded under the Mercedes-Benz name. From November 2019 onwards, the production of Mercedes-Benz-branded heavy commercial vehicles (trucks and buses) has been managed by Daimler Truck, which separated from the Mercedes-Benz Group to form an independent entity at the end of 2021. In 2018, Mercedes-Benz became the world’s largest premium vehicle brand, with a sales volume of 2.31 million passenger cars. The roots of the brand trace back to the 1901 Mercedes (marque), Mercedes by Daimler-Motoren-Gesellschaft and the 1886 Benz Patent-Motorwagen and 1894 Benz Velo by Carl Benz, which is widely recognized as the first automobile powe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes-Benz M121 Engine
The Mercedes-Benz M121 engine was a 1.9 liter single overhead camshaft inline four-cylinder engine introduced by Mercedes in 1955 and used in various model lines during the 1950s and 1960s. Rated at at 5500 rpm in its base version, it replaced the 1.8 liter M136 introduced in 1935, offering improved performance over the M136's side camshaft design. The engine's first application was in the W121 Mercedes 190SL luxury roadster in May of 1955, in a high-performance M121 BII version. Applications included mid-size sedans, such as the 190, the 190SL roadster, and trucks such as the Unimog and L319 models. The M121 series was in production until 1967, when the M115 engine took its place. History The M121 engine was developed just after the end of World War II. It was built in the Sindelfingen Works factory, which assembled the Mercedes Ponton Model series to which the engine belonged to. The M121 engine made its debut in 1955. It was the first generation of 4-cylinder engi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes-Benz Engines
Mercedes-Benz (), commonly referred to simply as Mercedes and occasionally as Benz, is a German automotive brand that was founded in 1926. Mercedes-Benz AG (a subsidiary of the Mercedes-Benz Group, established in 2019) is based in Stuttgart, Baden-Württemberg, Germany. Mercedes-Benz AG manufactures luxury vehicles and light commercial vehicles, all branded under the Mercedes-Benz name. From November 2019 onwards, the production of Mercedes-Benz-branded heavy commercial vehicles (trucks and buses) has been managed by Daimler Truck, which separated from the Mercedes-Benz Group to form an independent entity at the end of 2021. In 2018, Mercedes-Benz became the world’s largest premium vehicle brand, with a sales volume of 2.31 million passenger cars. The roots of the brand trace back to the 1901 Mercedes by Daimler-Motoren-Gesellschaft and the 1886 Benz Patent-Motorwagen and 1894 Benz Velo by Carl Benz, which is widely recognized as the first automobile powered by an intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes-Benz W120
The Mercedes-Benz W120 and Mercedes-Benz W121 are technically similar inline-four cylinder sedans of slightly different engine displacements made as two model series by Mercedes-Benz, the 180 and 190: * the W120 was introduced as the 180 in 1953, powered by the company's existing 1.8 liter M136 engine. From 1954, the W120 was also offered with a diesel engine as the ''Mercedes-Benz 180 D''. Both versions were sold through 1962 * the W121 debuted as the 190` in 1956, powered by a 1.9 liter M121 engine,. From 1958, it was also offered with the OM621 diesel, sold as the 190 D. Both versions were sold through 1961. Each model's diesel version received engine upgrades during its run. Together with the longer wheelbase and more luxurious 2.2-liter inline-six cylinder W128 model 220, they constituted 80 percent of Mercedes-Benz' car production between 1953 and 1959. The W121 190/190D were replaced by the Mercedes-Benz W110 190c/190Dc in 1961. The W120 was the first pred ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes-Benz W121
The Mercedes-Benz W120 and Mercedes-Benz W121 are technically similar Straight-four engine, inline-four cylinder Sedan (automobile), sedans of slightly different engine displacements made as two model series by Mercedes-Benz, the 180 and 190: * the W120 was introduced as the 180 in 1953, powered by the company's existing 1.8 liter Mercedes-Benz M136 engine, M136 engine. From 1954, the W120 was also offered with a diesel engine as the ''Mercedes-Benz 180 D''. Both versions were sold through 1962 * the W121 debuted as the 190` in 1956, powered by a 1.9 liter Mercedes-Benz M121 engine, M121 engine,. From 1958, it was also offered with the Mercedes-Benz OM621 engine, OM621 diesel, sold as the 190 D. Both versions were sold through 1961. Each model's diesel version received engine upgrades during its run. Together with the longer wheelbase and more luxurious 2.2-liter Straight-six engine, inline-six cylinder Mercedes-Benz W128, W128 model 220, they constituted 80 percent of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unimog
The Unimog (pronunciation in American English: ''YOU-nuh-mog''; British English: ''YOU-knee-mog''; German: , ) is a Daimler Truck line of multi-purpose, highly offroad capable AWD vehicles produced since 1948. Utilizing engine-driven power take-offs (PTO) Unimogs have operated in the roles of tractors, light trucks and lorries, for snow plowing, in agriculture, forestry, rural firefighting, in the military, even in rallying and as recreational vehicles. The frame is designed to be a flexible part of the suspension, not to carry heavy loads. Overview Conceived in 1944 in response to the Morgenthau Plan, former Daimler-Benz airplane engine engineers developed prototypes under occupation. The small universally-applicable motorised 25hp workhorse was designed to be able to fit over two rows of potatoes to work on fields like a slow agricultural tractor, but with four equal size wheels on portal axles, coil spring suspension, and many gears allowing it to run on roads like a truck. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes-Benz W110
The W110 is a line of mid-size primarily inline four-cylinder executive cars produced by Mercedes-Benz between 1961 and 1968. The company's basic line of for much of the 1960s, it was part of Mercedes' unified platform of "Fintail" () models – first introduced as a six-cylinder Mercedes W111 in 1959. The 190c and 190Dc sedans debuted in April 1961, replacing the W120 180c/180Dc and W121 190b/190Db. The gasoline-powered 190c was fitted with the 1.9 L M121, an upgrade from the 1.8 L M136, and the 190Dc the 2.0 L OM621 diesel, an upgrade from the obsoleted 1.8 L OM636. The W110 line was refreshed in July 1965, with an engine displacement increase to 2.0 litres and a second carburetor giving more power to the new gasoline 200 model that displaced the 190, and an improved already 1988 cc diesel fitted in the new 200D that replaced the 190Dc. The W110 range gained a new model, the 230, a downscaled version of the 6-cylinder W111 220S (with the commensurate new 230S repla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piston
A piston is a component of reciprocating engines, reciprocating pumps, gas compressors, hydraulic cylinders and pneumatic cylinders, among other similar mechanisms. It is the moving component that is contained by a cylinder (engine), cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod. In a pump, the function is reversed and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluid in the cylinder. In some engines, the piston also acts as a valve by covering and uncovering Porting (engine)#Two-stroke porting, ports in the cylinder. __TOC__ Piston engines Internal combustion engines An internal combustion piston engine, internal combustion engine is acted upon by the pressure of the expanding combustion gases in the combustion chamber space at the top of the cylinder. This force then acts dow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylinder Head
In a piston engine, the cylinder head sits above the cylinders, forming the roof of the combustion chamber. In sidevalve engines the head is a simple plate of metal containing the spark plugs and possibly heat dissipation fins. In more modern overhead valve and overhead camshaft engines, the head is a more complicated metal block that also contains the inlet and exhaust passages, and often coolant passages, valvetrain components, and fuel injectors. Number of cylinder heads A piston engine typically has one cylinder head per bank of cylinders. Most modern engines with a "straight" (inline) layout today use a single cylinder head that serves all the cylinders. Engines with a "V" layout or "flat" layout typically use two cylinder heads (one for each cylinder bank), however a small number of 'narrow-angle' V engines (such as the Volkswagen VR5 and VR6 engines) use a single cylinder head spanning the two banks. Most radial engines have one head for each cylind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camshaft
A camshaft is a shaft that contains a row of pointed cams in order to convert rotational motion to reciprocating motion. Camshafts are used in piston engines (to operate the intake and exhaust valves), mechanically controlled ignition systems and early electric motor speed controllers. Camshafts in piston engines are usually made from steel or cast iron, and the shape of the cams greatly affects the engine's characteristics. History Trip hammers are one of the early uses of a form of cam to convert rotating motion, e.g. from a waterwheel, into the reciprocating motion of a hammer used in forging or to pound grain. Evidence for these exists back to the Han dynasty in China, and they were widespread by the medieval period. Camshafts were first described by Ismail al-Jazari in 1206. Once the rotative version of the steam engine was developed in the late 18th century, the operation of the valve gear was usually by an eccentric, which turned the rotation of the crankshaft i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compression (physics), compression; thus, the diesel engine is called a compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Introduction Diesel engines work by compressing only air, or air combined with residual combustion gases from the exhaust (known as exhaust gas recirculation, "EGR"). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases air temperature inside the Cylinder (engine), cylinder so that atomised diesel fuel injected into the combustion chamber ignites. The torque a dies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes-Benz OM636 Engine
The Mercedes-Benz OM636 is a diesel engine that was produced by Daimler-Benz from 1948 until 1990. Being the successor to the OM138, the OM636 has been used both as a passenger car engine and as an industrial engine. It saw its first use in the Boehringer Unimog in 1948, prior to its official introduction in the 1949 Mercedes-Benz W136. Throughout the 1950s, the OM636 was widely used in the Mercedes-Benz W120. In 1958, it was succeeded by the OM621 passenger car engine. However, after the introduction of the OM621, the OM636 was kept in production for industrial vehicles such as small lorries, boats, and combine harvesters, until 1990. The abbreviation ''OM'' means ''Oelmotor'' (oil engine), and stands for a Daimler-Benz engine that uses any kind of light fuel oil as fuel (diesel engine). History Daimler-Benz began developing the OM636 during World War II, and had completed the developing process by 1948. According to Carl-Heinz-Vogler, a former Daimler-Benz engineer, the O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
