F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/42, 171/63
F02M 1/06 (2006.01) F02B 19/02 (2006.01) F02B 41/06 (2006.01)
Patent
CA 1036440
Abstract of the Disclosure Operating methods and details of a two-stage internal combustion engine are disclosed. First-stage cylinders accept a constant double charge of air, sufficient for burning the maximum allowed amounts of fuel in both first and second stages. Combustion chambers are separated from cylinders with connecting valves, first-stage chambers have measuring cells with spark ignition, second-stage chambers use auto-ignition. Fuel supplied directly to chambers using dual injectors giving separate control to each stage. Excess cylinder gases lower temperatures after combustion and retain heat. External cooling is reduced. Enlarged second- stage cylinder allows extended expansion of gases. Check valve in second-stage exhaust duct allows recovery of negative work input at light loads. Basic engine unit consists of two first-stage cylinders operating on a four-stroke cycle and one second-stage cylinder using a two stroke cycle. working alternately with the two first-stage cylinders. Methods of combining two or more basic engine units are also disclosed. -1-
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