Timed priming system with temperature override

Details Timed priming system with temperature override Timed priming system with temperature override

F - Mech Eng,Light,Heat,Weapons

02

M

342/10, 342/19.1

F02M 1/10 (2006.01) F02M 1/04 (2006.01) F02B 75/02 (2006.01)

Patent

CA 1263727

ABSTRACT The two cycle engine has a combustion chamber supplied with primary fuel for normal operation. An electrically operated priming system delivers fuel in addition to the primary fuel. A control regulates energization of the priming system. A momentary switch energizes the priming system when the switch closes and enables the control when the switch opens. The control causes the priming system to operate a predetermined period of time after the control is enabled but is subject to override by a switch responsive to engine temperature. Thus the priming system is shut down by the temperature responsive switch when engine temperature exceeds a predetermined value. The timing function of the control is provided by an integrated circuit chip wired as a timer. When the engine is started the timer chip is reset to zero and the timer starts timing when the momentary switch opens.

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