Robert Boschgmbh

Martin Boehm

Rainer Haeberer

Markus Rueckle

Karsten Hummel

Helmut Clauss

Lorenz Zerle

Felix Landhaeusser

Siegfried Ruthhardt

A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump which is driven as a function of engine rpm and serves to generate the fuel pressure and fuel throughput required in the distributor tube in the applicable operating state of the engine, and also has a fuel metering unit, which is assigned to the high-pressure pump and is based on an electromagnetically actuated regulating valve. The fuel metering unit is disposed in the high-pressure pump, and the outlet of the regulating value discharges into the low-pressure region of the high-pressure pump. The inlet of the regulating valve communicates with the compression side of a prefeed pump. The regulating valve has a valve piston, which is actuated&mdash;into the opening position&mdash;by a compression spring and which is actuatable counter to the spring force&mdash;into the closing position&mdash;by an armature bolt of the electromagnet. Valve piston has at least one and preferably more radial control openings, which are in operative communication with the intake side of the high-pressure pump.

Fuel-injection valve for internal combustion engines

A speed governor for fuel injection pumps of internal combustion engines that has a centrifugal adjuster that acts counter to the force of governor springs to generate a speed-dependent adjustment travel of a governor sleeve and that acts on a fuel quantity adjusting device of a fuel injection pump via the governor sleeve and a governor lever disposed thereupon In this process a charge-pressure-dependently adjustable stop for a full-load fuel supply quantity, which is disposed on a stop lever is pivoted as a function of temperature and speed into the adjustment path of a counter stop disposed on the fuel quantity adjusting device, in such a way that, after a certain speed and a certain operating temperature of the engine has been reached, the stop comes into contact with this counter stop of the fuel quantity adjusting device. For this purpose the stop lever has two lever arms, and a temperature-dependently controlled governor member which acts on the first lever arm, and a speed-dependently-controlled control lever which acts in the same direction of rotation on the second lever arm.

Speed governor for fuel injection pumps

Growing community of inventors

Stuttgart, Germany

Martin Boehm