Robert Boschgmbh

Eberhard Haberkern

Udo Zucker

Gerhard Lotterbach

Jan F Van Woudenberg

In a multi-cylinder internal combustion engine having fuel injection, in particular a turbo-engine, having air intake and exhaust gas conduits, a turbocharger and a regulating valve for furnishing combustion air to the exhaust gas conduit when the throttle valve in the air intake conduit is closed partially or entirely, in order to maintain the charge pressure of the turbocharger during overrunning or at partial load with good efficiency of the system. When the regulating valve opens, a portion of the cylinders is not ignited and the remaining portion of the cylinders is ignited at an extremely late instant of ignition, with suitable metering of the fuel injection quantity. A total fuel quantity is injected into the non-ignited cylinders that together with the combustion air supplied to the exhaust gas conduit burns to produce an additional exhaust gas volume that keeps the turbine of the turbocharger disposed in the exhaust gas conduit at a sufficiently high rpm for furnishing a sufficiently high air throughput via the compressor.

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Unterheinriet, Germany

Eberhard Haberkern