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AssigneeRobert Bosch GmbH
InventorsWolf Wessel, Wilfried Sautter, Gerhard Engel, Gerhard Stumpp
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A method and apparatus for controlling a Diesel engine by limiting the amount of fuel to be admitted to the engine in dependence on engine speed and on the air mass flow rate. The invention provides a primary set of stored data interrelating these variables. The primary data set is used to generate a set-point value for the position of a movable stop member which limits the mechanical travel of the fuel control rack in the fuel injection pump; the control rack is also subject to the action of a mechanical speed governor. Additional corrections of the maximum amount of fuel are made on the basis of air temperature and fuel temperature. Still further refinements include taking into account exhaust gas temperature and engine starting conditions. The final corrected set-point signal is then compared with the output from a position indicator which is attached to the stop member. A servo-controlled element corrects the position of the stop member until the error indications are minimized in a closed loop, feedback control circuit.
A method for controlling the full load fuel supply quantity to a Diesel engine, said engine being equipped with a mechanical speed governor, a fuel injection pump including a fuel quantity control rod, said speed governor serving to adjust the amount of fuel admitted to said engine by setting the position of the fuel quantity control rod in said fuel injection pump, and a control system including a full load stop, the position of which is set to limit the travel of said control rod, said method comprising the steps of:
An apparatus for controlling the full load fuel supply quantity to a Diesel engine, including:
Dependencies are inferred from the claim text.