Robert Boschgmbh

Man B&w Diesel Aktiengesellschaft

Stephan Haas

Thomas Kuegler

Detlev Potz

Peter Grünaug

Dieter Herrmann

Günter Heider

A method for optimizing the operating and combustion processes of a diesel engine with common rail injection and a turbocharger includes injecting fuel into each combustion chamber of the diesel engine by a main injection and a post-injection which follows the main injection and controlling a start time and a quantity of the post-injection as a function of an end of the main injection and as a function of operating parameters of the diesel engine using an electronic engine control unit and an input-output map stored in the electronic engine control unit. The post-injection is initiated at a point 30&#x2013;180&#xb0; of rotation of a crankshaft of the diesel engine after the end of the main injection, and the quantity of the post-injection is adjusted to 20&#x2013;30% of a quantity of the main injection.

Method for optimizing the operating mode and combustion processes of a diesel engine

A fuel injection valve for internal combustion engines, having a valve member that is displaceable axially outward counter to a restoring force in a bore of a valve body. On an end toward the combustion chamber, the valve member has a closing head. The closing head protrudes from the bore and forms a valve closing member and on a side toward the valve body has a valve sealing face. The valve closing member cooperates with a valve seat face, disposed on a face end toward the combustion chamber of the valve body. The valve closing member at least one injection opening on the closing head. The injection opening originating at a pressure chamber and outlet opening being covered, in the closing position of the valve member, by the valve body and being uncovered upon an outward-oriented opening stroke. A two-stage hydraulic stroke stop, which limits the opening stroke of the valve member and is embodied as a hydraulic damping chamber with a relief line that can be opened. The relief line can be made to communicate with the damping chamber via at least two recesses on the valve member, the two recesses can be opened in succession during the opening stroke motion of the valve member, and at least one of the recesses can be made to communicate with a low-pressure chamber via a relief conduit that contains a valve.

Fuel injection valve

Fuel injection valve for internal combustion engines

Growing community of inventors

Mammendorf, Germany

Stephan Haas