F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
123/244.1
F02B 75/12 (2006.01) F02B 23/08 (2006.01) F02B 41/00 (2006.01) F02B 75/28 (2006.01) F02B 3/06 (2006.01)
Patent
CA 1280044
ABSTRACT OF THE DISCLOSURE An internal combustion engine has two cylinders inter- connected at their head ends by a combustion chamber which con- tains a continuously operable ignition means particularly a cat- alyst. The cylinders have respective pistons reciprocable tow- ards and away from the combustion chamber and arranged to perform together the induction, compression, expansion and exhaust str- okes. Air only or the like is freely inducted into one cylinder while fuel or a fuel/air mixture is metered and inducted into the other cylinder during the induction stroke. The catalyst igni- tion means is of a type which effects a chemical reaction to initiate combustion at a relatively low temperature so that when the fuel/air mix contacts the catalyst at the required tempera- ture ignition takes place. The crank shaft angular phase diffe- rence between the pistons is controlled during operation so that the air in the first cylinder is at a higher pressure than the fuel or fuel/air mixture in the other cylinder during compression strokes and forced through the catalyst, preventing contact of the fuel or fuel/air mixture in the second cylinder with the catalyst until ignition is required when the first piston is in the vicinity of its top dead centre. Since it is the movement of the pistons themselves which control the ignition timing the lat- ter is not dependent on the timed induction of the fuel and an external ignition circuit is also not required. This provides a much simplified form of engine.
476089
Coventry University
Marks & Clerk
Merritt Dan
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