F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
341/38.11
F02D 41/34 (2006.01) F02M 65/00 (2006.01) G01F 15/07 (2006.01) F02B 3/06 (2006.01)
Patent
CA 1179418
C-3362 D-5,115 APPARATUS FOR INDICATING INJECTION TIMING AND FUEL PER STROKE IN AN INTERNAL COMBUSTION ENGINE Abstract of the Disclosure Apparatus for indicating timing and fuel/ stroke in a pulse fuel injection system for an internal combustion engine, especially a diesel engine, includes a magnetic piston axially movable in a cylindrical bore in a fuel line to and from a stopped position blocking an inlet. The piston is included in a magnetic circuit including an actuating coil having an inductance varying with piston position. Circuitry provides a DC current pulse to the coil prior to injection to move the piston to its stopped position and then provides an AC current to the coil and monitors the voltage and rate of change of voltage thereacross. Change of voltage past a first reference is sensed to generate an injection timing signal; and decrease of rate of change of voltage past a second reference with voltage past the first reference triggers sensing of the voltage as a signal indicating fuel quantity per injection stroke.
406570
Romblom Edward R.
Sundeen Arthur R.
General Motors Corporation
Gowling Lafleur Henderson Llp
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