Abstract: An axial piston machine for at least one of a pump and a motor operation includes a housing, connection plate, piston drum, and working piston. The connection plate is connected to the housing. The piston drum is arranged on a rotatable drive shaft in the housing interior and defines at least one cylinder bore. The working piston is arranged in a longitudinally displaceable manner in the cylinder bore. The cylinder bore delimits a cylinder space having a changeable volume. The cylinder space is configured to connect to at least one pre-compression space via at least one hydraulic connection. The at least one pre-compression space is defined by a cavity within the connection plate. The cavity is defined by the connection plate and a closing element. The closing element is arranged between the connection plate and the housing interior.

Abstract: An axial piston machine for at least one of a pump and a motor operation includes a housing, connection plate, piston drum, and working piston. The connection plate is connected to the housing. The piston drum is arranged on a rotatable drive shaft in the housing interior and defines at least one cylinder bore. The working piston is arranged in a longitudinally displaceable manner in the cylinder bore. The cylinder bore delimits a cylinder space having a changeable volume. The cylinder space is configured to connect to at least one pre-compression space via at least one hydraulic connection. The at least one pre-compression space is defined by a cavity within the connection plate. The cavity is defined by the connection plate and a closing element. The closing element is arranged between the connection plate and the housing interior.

Abstract: The invention relates to a high-pressure injection system, in particular for auto-igniting internal combustion engines, with at least one high pressure pump and a high pressure reservoir, through which at least one fuel injector is supplied with a fuel under pressure. The high-pressure injection system comprises at least one pressure booster unit which has at least two pressure boosters, each with a high pressure piston which can be driven independently of the other.

Abstract: The invention relates to a fuel injection system for an internal combustion engine having a high pressure pump, a high pressure reservoir, a plurality of fuel injectors, a hydraulic pressure booster, and a control valve for actuating the hydraulic pressure booster. The hydraulic pressure booster is provided centrally for all of the fuel injectors. The central hydraulic pressure booster is disposed between the high pressure pump and the high pressure reservoir.

Abstract: The invention relates to a pressure boosting system for at least one fuel injector of a high pressure injection system of an internal combustion engine, having a hydraulic pressure booster that is actuated by a control valve. The hydraulic pressure booster is configured with a pressure boosting piston, which comprises a first pressure booster piston part having a first diameter and a second pressure booster piston part having a second diameter, wherein the first diameter is greater than the second diameter. The pressure booster piston is disposed within a hydraulic reservoir chamber, onto which pressure is applied, together with the first pressure booster piston part having the greater diameter, wherein the accumulator chamber in turn is configured within a base body. The base body has a piston guide body for at least one of the pressure booster piston parts. The piston guide body is at least partially surrounded by an annular space, which is part of the hydraulic accumulator chamber.

Abstract: A fuel injection device for an internal combustion engine includes a housing and a valve element which is arranged in the housing. The valve element interacts, in the region of a fuel outlet opening, with a valve seat. The valve element is embodied by at least one first part and at least one second part which are coupled to one another by means of a hydraulic coupler. The hydraulic coupler has a coupling chamber which is delimited at least partially by a sleeve which is guided on the first part of the valve element. Additionally a guide element guides an end region of the first part of the valve element, which end region being oriented toward the second part of the valve element.

Abstract: Disclosed is a fuel injection device comprising a housing and a valve element disposed therein and cooperating with a valve seat located in the area of at least one fuel discharge port. The valve element is composed of several parts while at least two parts of the valve element are coupled to each other via a hydraulic coupler.

Abstract: The invention relates to a pressure boosting system for at least one fuel injector of a high pressure injection system of an internal combustion engine, having a hydraulic pressure booster that is actuated by a control valve. The hydraulic pressure booster is configured with a pressure boosting piston, which comprises a first pressure booster piston part having a first diameter and a second pressure booster piston part having a second diameter, wherein the first diameter is greater than the second diameter. The pressure booster piston is disposed within a hydraulic reservoir chamber, onto which pressure is applied, together with the first pressure booster piston part having the greater diameter, wherein the accumulator chamber in turn is configured within a base body. The base body has a piston guide body for at least one of the pressure booster piston parts. The piston guide body is at least partially surrounded by an annular space, which is part of the hydraulic accumulator chamber.

Abstract: The invention relates to a high-pressure injection system, in particular for auto-igniting internal combustion engines, with at least one high pressure pump and a high pressure reservoir, through which at least one fuel injector is supplied with a fuel under pressure. The high-pressure injection system comprises at least one pressure booster unit which has at least two pressure boosters, each with a high pressure piston which can be driven independently of the other.

Abstract: The invention relates to a fuel injection system for an internal combustion engine having a high pressure pump, a high pressure reservoir, a plurality of fuel injectors, a hydraulic pressure booster, and a control valve for actuating the hydraulic pressure booster. The hydraulic pressure booster is provided centrally for all of the fuel injectors. The central hydraulic pressure booster is disposed between the high pressure pump and the high pressure reservoir.

Abstract: The invention relates to a pressure booster arrangement for high-pressure injection systems or high-pressure injection system parts of internal combustion engines. A differential piston which operates with a large cross section in a medium-pressure reservoir and with partial cross sections is operative in terms of positive displacement in associated control and work pressure chambers that are separate from the medium-pressure reservoir and that are disposed in a guide body. The guide body guides the differential piston in its strokes and in turn axially adjoins a valve body. The valve body receives control and check valves for controlling communicating lines of the guide body and of the valve body for controllably connecting the control and work chambers to the medium-pressure reservoir or to a relatively pressureless fluid reservoir.

Abstract: The invention relates to a pressure booster arrangement for high-pressure injection systems or high-pressure injection system parts of internal combustion engines. A differential piston which operates with a large cross section in a medium-pressure reservoir and with partial cross sections is operative in terms of positive displacement in associated control and work pressure chambers that are separate from the medium-pressure reservoir and that are disposed in a guide body. The guide body guides the differential piston in its strokes and in turn axially adjoins a valve body. The valve body receives control and check valves for controlling communicating lines of the guide body and of the valve body for controllably connecting the control and work chambers to the medium-pressure reservoir or to a relatively pressureless fluid reservoir.

Abstract: A socket for a towing apparatus for releasably coupling a motor vehicle trailer, includes a housing having a front housing section for receiving a trailer-side plug-in connector and a cable outlet for motor vehicle-side cabling. A first axis of the housing extends in the insertion direction of the plug-in connector, and a second axis extends axially with respect to the cable outlet. The two axes enclose an angle which is less than 180°.

Abstract: A fuel injection device for an internal combustion engine includes a housing and a valve element which is arranged in the housing. The valve element interacts, in the region of a fuel outlet opening, with a valve seat. The valve element is embodied by at least one first part and at least one second part which are coupled to one another by means of a hydraulic coupler. The hydraulic coupler has a coupling chamber which is delimited at least partially by a sleeve which is guided on the first part of the valve element. Additionally a guide element guides an end region of the first part of the valve element, which end region being oriented toward the second part of the valve element.

Abstract: Disclosed is a fuel injection device comprising a housing and a valve element disposed therein and cooperating with a valve seat located in the area of at least one fuel discharge port. The valve element is composed of several parts while at least two parts of the valve element are coupled to each other via a hydraulic coupler.

Abstract: The invention relates to a system for injecting fuel into a combustion chamber of an internal combustion engine, having a fuel injector, which can be subjected to fuel at high pressure and which is actuatable via a metering valve, by which the pressure in an injection valve member control chamber or in a control line is controllable such that an injection valve member opens and closes for injecting fuel. The injection valve member control chamber can be evacuated via an outlet throttle device into a control line which has a smaller throttle cross section than an inlet throttle device, by way of which the injection valve member control chamber can be filled.

Abstract: A retractile trailer hitch has a tube shaft fixed on a motor-vehicle frame and an arm having a tubular inner end pivotal on the shaft and an outer ball end. The arm is limitedly axially displaceable on the shaft between locked and unlocked positions. Formations on the frame and on the inner end angularly arrest the arm in its end positions in the locked position of the inner end. The formations are unengageable with each other in the unlocked position of the inner end. A bolt is axially displaceable inside the shaft between a holding position and a freeing position. Balls inside the inner end are coupled to the bolt for axially displacing the arm into the locked position on displacement of the bolt into the holding position and for displacing the arm axially into the unlocked position on displacement of the bolt into the freeing position.

Abstract: A retractile trailer hitch has a tube shaft fixed on a motor-vehicle frame and an arm having a tubular inner end pivotal on the shaft and an outer ball end. The arm is limitedly axially displaceable on the shaft between locked and unlocked positions. Formations on the frame and on the inner end angularly arrest the arm in its end positions in the locked position of the inner end. The formations are unengageable with each other in the unlocked position of the inner end. A bolt is axially displaceable inside the shaft between a holding position and a freeing position. Balls inside the inner end are coupled to the bolt for axially displacing the arm into the locked position on displacement of the bolt into the holding position and for displacing the arm axially into the unlocked position on displacement of the bolt into the freeing position.