F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/43
F02M 61/02 (2006.01) F02B 31/08 (2006.01) F02M 25/07 (2006.01) F02M 35/108 (2006.01) F02B 31/00 (2006.01) F02M 35/10 (2006.01)
Patent
CA 1116487
ABSTRACT OF THE DISCLOSURE An extra induction passage extends to an intake port for each combustion chamber to induct air, fuel or recirculated exhaust gas by utilizing vacuum in the intake port. This passage terminates at a jet-producing nozzle which is located near the end of a valve guide for an ordinary intake valve and directed towards a peripheral region of the inlet opening of the combustion chamber. Preferably, the extra induction passage extends outside of the valve guide, and a valve which acts in synchronism with the intake valve is provided to this passage or the nozzle. A gas jet from the nozzle, particularly under low-load conditions, promotes homogenization of a com- bustible gas mixture and causes a turbulent or swirling motion of the mixture in the combustion chamber, so that combustion proceeds rapidly and smoothly even though the mixture comprises large excess air or large amount of exhaust gas.
316497
Marks & Clerk
Nissan Motor Co. Ltd.
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