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Home › Piston-type internal combustion engine having two groups of cylinders one of which being selectively inoperative and means for supplying exhaust gas to the catalytic converter of the inoperative group

Piston-type internal combustion engine having two groups of cylinders one of which being selectively inoperative and means for supplying exhaust gas to the catalytic converter of the inoperative group

US Patent 5782088 · Granted Jul 21, 1998

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