Robert Boschgmbh

Dominik Kuhnke

Dirk Vahle

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.

Pressure booster with integrated pressure reservoir

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.

Fuel injection system with pressure boosting

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.

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Gerlingen, Germany

Dominik Kuhnke