F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
341/94
F02D 41/08 (2006.01) F02M 3/06 (2006.01) F02M 3/07 (2006.01)
Patent
CA 2008796
IDLE SPEED CONTROL APPARATUS ABSTRACT OF THE DISCLOSURE An idle speed control apparatus for controlling the idle speed of an internal combustion engine includes a main inlet air passage, a throttle valve positioned in the main air passage, a bypass air passage connected to the main air passage and bypassing the throttle valve, a control valve positioned in the bypass air passage, and an auxiliary bypass air passage which bypasses both the throttle valve and the control valve. The control valve is responsive to a control signal to control air flow in the bypass air passage and regulate the idle speed of the engine. A manually operable mechanism is provided in the auxiliary air passage for manually controlling air flow therethrough and adjusting the engine idle speed. A first control signal causes the control valve to maintain the idle speed within a normally desired range. To facilitate manual adjustment of the idle speed, an arrangement is provided which permits manual generation of a selection signal indicating that manual adjustment of the idle speed is desired. A second control signal is produced in response to the selection signal and causes the control valve to maintain the idle speed within a reduced range which is substantially smaller than the normally desired range.
Shapiro Cohen
Suzuki Motor Corporation
LandOfFree
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