Mercedes-benz Aktiengesellschaft

Daimler Chrysler Ag

Georg Eiermann

Wolf Boll

Erhard Rau

Karl Zeilinger

Albert Pietsch

Bernhard Heil

A V-type internal combustion engine has a mechanically driven supercharger located essentially between the V-shaped cylinder banks of the engine. In addition, an intercooler is located downstream of the supercharger and has an intake plenum on the outlet side, which is connected by intake pipes with the air intakes of the cylinders of both cylinder banks. In order to provide an internal combustion engine with compact, easily managed mechanical supercharging, characterized by agile response, the supercharger and the intercooler form a preassembled module. The supercharger is located above the intercooler in the installed position, and the intake plenum is located on top of the intercooler but below the supercharger between the V-shaped cylinder banks.

V-type internal combustion engine with a mechanically driven supercharger

The invention relates to a bearing bridge connecting the main bearing seats of a reciprocating-piston combustion engine in the longitudinal direction of the crankshaft. To reduce the power loss caused by the oil flowing back into the crank case space striking the rotating drive parts, and the oil ageing rate, it is proposed to provide the bearing bridge between the main bearing seats with a shape which screens off the rotating drive parts of the combustion engine with respect to the crank case space.

Bearing bridge construction for the crankshaft mounting of a combustion

A valve-controlled internal combustion engine has a first valve group consisting of three inlet valves and a second valve group consisting of at least one exhaust valve for each cylinder of the internal combustion engine. The valve axis of one valve of a valve group, relative to valve axis of the other valves of the group, is arranged at a different angle from a center longitudinal plane running through a row of cylindrical bores of the internal combustion engine and is at a different distance from the center longitudinal plane. A camshaft controlling the inlet valves and a second camshaft controlling the exhaust valves or valves are arranged in the cylinder head. Rocker arms for actuating the corresponding cams of the camshafts are rotatably mounted on spindles. The valve axes are at approximately same distance from the longitudinal axis of the camshaft, and the rocker arms for the valves of a valve group are mounted alternately on either side of the camshaft at approximately the same distance from the camshaft.

Growing community of inventors

Fellbach-Schmiden, Germany

Georg Eiermann