Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1984-02-27
1986-06-03
Argenbright, Tony M.
Internal-combustion engines
Engine speed regulator
Idle speed control
F02D 902
Patent
active
045923213
ABSTRACT:
A controller (13) provides control signals to an engine (E) to control its idling speed. To provide for additional fuel under special operating conditions--e.g. low engine temperature, starting conditions, placement of a sudden load such as connection of an air-conditioner or the like--a modification signal is generated in signal generators (17, 18, 19 . . . 19n) which signals are introduced into the path of the signals from the idle or command function generator (11) to a positioning element (15) which controls fuel supply to the engine. The engine itself can provide at least some of the signals to the function generators, for example by engine temperature transducers (ETt); engine speed transducers (ETn), to provide engine temperature signals. Starting can be sensed by sensing both engine speed and temperature, and/or operation of the starting switch. An additional function generator (19) is preferably provided to prevent overshoot of the positioning element (15) if the accelerator pedal is suddenly released, thus preventing stalling of the engine.
REFERENCES:
patent: 4418665 (1983-12-01), Nagase
patent: 4444168 (1984-04-01), Matsumura et al.
patent: 4513710 (1985-04-01), Kobayashi et al.
Argenbright Tony M.
Robert & Bosch GmbH
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