Patent ID: 6964161

Claim:
An exhaust apparatus for an internal combustion engine for inducting combustible matter into an internal combustion chamber of the internal combustion engine via an exhaust port of the internal combustion chamber, said internal combustion engine having at least a first and a second exhaust port, the apparatus comprising: (a) a first vacuum break chamber having at least two engine-side connections and at least two opposite-engine-side connections, and a second and a third vacuum break chamber, each having at least an engine-side connection and at least two opposite-engine-side connections; (b) at least one of the first, second and third vacuum break chambers being arranged so as to capture and re-induct to the internal combustion chamber an exhaust flow comprising at least one of the following; i) unburned air fuel mixture; ii) unburned fuel; iii) partly burned fuel; iv) energetic free radicals of at least one of NO X , CO X , HO − , H + , C N H 2N−X , CN, CN—R, C N H 2N+1 OH, N X − , SO X — and H 2 O; (c) first and second exhaust pipes, flow connected from said first and second an exhaust ports respectively to an engine-side connection of the first vacuum break chamber; (d) a third exhaust pipe flow connected from an opposite-engine-side connection of the first vacuum break chamber to the engine-side connection of the second vacuum break chamber; (e) a fourth exhaust pipe flow connected from an opposite-engine-side connection of the first vacuum break chamber to the engine-side connection of the third vacuum break chamber; (f) a first pair of discharge/induction pipes, each pipe having a proximal end and a discharge/induction end, the proximal ends each flow connected to an opposite-engine-side connection of the second vacuum break chamber; (g) a second pair of discharge/induction pipes, each having a proximal end and a discharge/induction end, the proximal ends each flow connected to an opposite-engine-side connection of the third vacuum break chamber; (h) a catalytic converter flow connected within the third exhaust pipe; and (i) a catalytic converter flow connected within the fourth exhaust pipe.