Fuel injection control system
AssigneeRobert Bosch GmbH
InventorsWolf Wessel, Wilfried Sautter
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AssigneeRobert Bosch GmbH
InventorsWolf Wessel, Wilfried Sautter
Estimating the term…
A control system for the fuel injection mechanism of an internal combustion engine, especially a Diesel engine. In order to adapt the fuel admitted to the engine to exact requirements, a correction is made on the basis of air mass flow rate and fuel temperature. The air mass flow rate is deduced from signals generated by an air temperature sensor and an air pressure sensor while the fuel temperature is taken by a fuel temperature sensor. The two temperature signals are applied to a bridge circuit which feeds a differential amplifier whose output is mixed with the pressure signal. The composite mixed signal is applied to a servo-mechanism to limit the excursion of the fuel control rack of the fuel injection pump. Status indicators generate feedback signals for comparison with set-point signals to provide closed-loop control.
A control system for use in association with a fuel injection pump of an internal combustion engine, said injection pump having a fuel rack, said control system including control means for positioning the travel of said fuel rack and further including a servo-mechanism for determining the position of said control means, said servo-mechanism including an electronic controller connected to receive engine-related signals to thereby set the position of said control means, and wherein the improvement comprises:
Dependencies are inferred from the claim text.