摘要:
This invention concerns a fuel injection system for an internal combustion engine in which a cut-off is provided to interrupt the fuel supply. The fuel injection system has a pump element with a suction bore (3) wherein the suction bore (3) of the pump element can be closed by means of a valve body (70 arranged on a flexible tappet to interrupt the fuel supply.
摘要:
A driver, used as a link between a piston of an injection pump and a drive element which rests freely against the end of the piston nearest the driver and moves with the piston, is attached to the drive element in such a way that, in order to establish the link between the piston and the drive element, the driver can be rotated over the widened face of a baseplate located at the end of the piston until it reaches a final position in which it is secured by the fact that it grips the piston.
摘要:
A fuel injection pump for an internal combustion engine has at least one pump piston movably disposed in a piston sleeve in a pump housing. The piston includes a first arrangement operable during a stroke in a suction direction for drawing fuel from a suction side of the pump. The piston further includes a second arrangement operable during a stroke in a delivery direction for first cutting off a connection to the suction side of the pump and then initiating delivery from a working chamber into a pressure line. The piston and piston sleeve are provided with a control arrangement which divides the fuel injection into pre-injection and main injection phases. At least one pressure limiting arrangement is provided and is associated with the working chamber. The limiting arrangement is operable during the pre-injection phase when a predetermined engine speed is reached for maintaining the pressure in the working chamber and in the pressure line at a predetermined level.
摘要:
A fuel injection pump for self-ignition internal combustion engines, comprising at least one pump piston which is movably arranged in a piston sleeve and, during its stroke, in one direction draws fuel from the suction side into the working chamber of the pump and in the other direction of travel first cuts off the connection to the suction side and then commences delivery, which is divided into pre-injection and main injection, from the working chamber to the injection nozzle.
摘要:
A decompression apparatus for an internal combustion engine includes an adjustable eccentric decompression cam which pivotally supports a rocker arm which controls a valve. A switching member supported on and operable by the rocker arm during decompression causes the cam to move in progressive steps from a decompression position to a non-decompression position. The switching member is moved to an operative position at the start of decompression by one of two projections provided on the cam, and as the cam moves into its non-decompression position the other of the projections thereon moves the switching member to a non-operative position. A locking mechanism releasably holds the switching member in its non-operative position.
摘要:
A mechanism for actuating valves of an internal combustion engine includes a rotatably supported shaft having a cam surface thereon and a movably supported cam follower slidably engaging the cam surface at a first location. A second cam follower member slidably engages the cam surface at one of a second and a third location thereon when the shaft is respectively rotating in one of a first direction and a direction opposite thereto, the second and third locations being spaced from the first location in opposite directions by equal angular distances. The first and second cam follower members are each operatively coupled to a respective valve of the engine.
摘要:
An injection device for an internal combustion engine, especially a diesel engine, with a combustion chamber (16) for each defined by piston (2), cylinder and cylinder head (1), a multi-hole injection nozzle (5) and a shroud (3) projecting from the cylinder head (1) into the combustion chamber (16) and surrounding the nozzle (5) in such a way that a precombustion chamber is formed between shroud (3) and piston (2) at TDC, and a combustion process for an internal combustion engine, especially for a diesel engine, with an injection device as described hereinabove, wherein combined direct and swirl-chamber injection takes place in the vicinity of TDC.
摘要:
An injection pump for a diesel engine has a pump cylinder with a pump piston slideably mounted therein. The piston has a broadened foot portion. A cam is mounted on the camshaft and a rocker arm is mounted on a pivoting axis and has a camshaft end and a pump-side end. Means are provided for holding the camshaft end of the rocker arm in substantial contact with the cam. The pump-side end of the rocker arm has contact means for contacting the piston and moving the piston in the cylinder as the rocker arm is pivoted. The contact means includes means for loosely coupling the pump-side end of the rocker arm to the foot portion of the piston.
摘要:
A one-cylinder diesel engine with one cylinder head (1) is manufactured as a one-piece die casting; its intake passage (4) for the combustion air comprises a swirl channel (12) which feeds into a swirl chamber (11) situated on the back side of the intake valve (13).
摘要:
A reciprocating piston engine, in particular a single-cylinder Diesel engine (2), has an air filter (1) in the suction pipe (3). To service the same, a pressure gauge (13) is arranged downstream of the filter cartridge (7), in the direction of flow. A check valve is provided at the measurement site or in the measurement pipe (12) between the measurement site and the pressure gauge (13).