FUEL GAS FEEDING STRUCTURE OF SPARK IGNISION TYPE GAS ENGINE

摘要

PROBLEM TO BE SOLVED: To implement stable combustion, while injecting fuel gas during an intake stroke. SOLUTION: A combustion chamber 6 is formed, surrounded by an inner peripheral face of an engine cylinder 1, a piston 2, and a cylinder head 5. An intake pipe for taking in and supplying air is connected and communicates with the combustion chamber 6 via an intake port and an intake valve, and an exhaust pipe for exhausting exhaust combustion gas is connected and communicates to the combustion chamber 6 via an exhaust port and an exhaust valve. A recess portion 13 is formed at a center portion of a downward face of a cylinder head 5 opposite to an upper face of the piston 2, and a fuel injection apparatus 14 is disposed, so that the fuel gas is injected to collide with a peripheral wall of the recess 13, so as to feed the fuel gas.