RPM Governor for fuel injection engines
AssigneeRobert Bosch GmbH
InventorsErnst Ritter, Reinhard Schwartz
Life of this patent
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Abstract
An rpm governor for fuel injection engines whose function is to raise the idle rpm for a predetermined time period while the engine is cold in order to guarantee a clean idle running cycle of the engine. The rpm governor includes a compensating device having a thermostat which is designed to engage an idling spring and whose duration of engagement is determined by a heating device located on the thermostat. When the engine is cold, the tension in the spring is raised by the compensating device, thus effecting a higher rpm level, which rpm level is later reduced to normal idle when the governor has reached an operational temperature upon the passage of a predetermined period after cold starting.
Claims7
An rpm governor for fuel injection internal combustion engines, having a housing, an rpm-dependent regulating member including at least one idling and one main control spring associated with at least one intermediate lever adapted to influence a supply rate adjusting member of the fuel injection device, and further including a temperature dependent correcting device that is adapted to change the tension of the idling control spring and a thermostat associated with said idling spring, the further improvement wherein said thermostat is provided with a heating means which controls the operating period of the correcting device.
Dependencies are inferred from the claim text.