Device at intake systems for internal combustion engines

Details Device at intake systems for internal combustion engines Device at intake systems for internal combustion engines

1992-07-07

1993-05-11

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

123585, F02M 2507, F02M 2308

Patent

active

052092097

ABSTRACT:
A device at an intake system for internal combustion engines incorporating a return conduit (17) for exhaust gases between exhaust side and intake side, in said return conduit a valve (18) controlled by the engine speed, a connection flange (16) between engine block (10) and intake manifolds (14), said connection flange having through openings (14') for intake air to the cylinders (1-6), and an exhaust channel (17') arranged in the connection flange along the edge thereof, means for connecting the exhaust channel via said valve (18) to the engine exhaust side, said exhaust channel having branch conduits (20), communicating with the different through openings (14'). The connection flange is equipped with a further internal channel (19') extending along the exhaust channel (17'), but between this and the side of the connection flange (16) facing the intake manifolds (14), and which further channel (19') is connected to an outlet tube (11) forming part of the intake system before a throttle valve (12) provided therein for supply of air to the further channel (19').

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patent: 5014654 (1991-05-01), Ishibashi
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