System to detect slippage of a clutch for an internal combustion engine
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorFujio Makita
Life of this patent
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Abstract
An electromagnetic clutch has a drive member secured to a crankshaft of an internal combustion engine, and a driven member adjacent to the drive member. The system comprises a circuit for detecting the difference between numbers of revolutions of the drive member and driven member, a comparator for producing an output when the difference is higher than a reference value, a timer operated by the output of the comparator, and a warning device such as a buzzer operated by the signal from the timer when a predetermined time elapses. Thus, when the clutch slips, the warning signal is generated. Further, a circuit for changing clutch engaging characteristics is provided to be operated by the output of the comparator for preventing the overheating of the clutch.
Claims5
A system for detecting slippage of a clutch for an internal combustion engine which has a drive member secured to a crankshaft of said internal combustion engine and a driven member adjacent to said drive member, comprising:
- first circuit means for producing an output signal in proportion to the number of revolutions of said drive member;
- second circuit means for producing an output signal in proportion to the number of revolutions of said driven member;
- third circuit means for producing the difference between output signals of said first and second circuit means;
- comparator means for comparing said difference with a predetermined reference value and for producing an output signal when said difference is higher than said reference value;
- timer means operated in dependency on said output signal of said comparator;
- and
- a warning device connected to said timer means;
- said timer means being so arranged as to produce an output signal for operating said warning device when a predetermined time elapses.
A system for detecting slippage of a clutch for an internal combustion engine which has a drive member secured to a crankshaft of said internal combustion engine and a driven member adjacent to said drive member, comprising:
- first circuit means for producing an output signal in proportion to the number of revolutions of said drive member;
- second circuit means for producing an output signal in proportion to the number of revolutions of said driven member;
- third circuit means for producing the difference between output signals of said first and second circuit means;
- comparator means for comparing said difference with a predetermined reference value and for producing an output signal when said difference is higher than said reference value;
- timer means responsive to said output signal of said comparator means for generating a timer output signal after a predetermined interval elapses during which said output signal of said comparator means continues.
Dependencies are inferred from the claim text.