Apparatus for controlling timings of exhaust valves and method t

Details Apparatus for controlling timings of exhaust valves and method t Apparatus for controlling timings of exhaust valves and method t

1997-08-27

1998-12-22

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, 60284, F02D 1300

Patent

active

058508112

ABSTRACT:
The timing for opening the exhaust valve is advanced by an angle that varies depending upon the load exerted on an engine and the rotational speed of the engine at the cold starting of the engine during a predetermined period of time after the complete combustion. The heat of combustion is positively discharged into an exhaust system and, hence, an oxygen sensor and a catalytic converter disposed in the exhaust system of the engine are activated more quickly.

REFERENCES:
patent: 5233831 (1993-08-01), Hitomi et al.
patent: 5293741 (1994-03-01), Kashiyama et al.
patent: 5398502 (1995-03-01), Watanabe
patent: 5421308 (1995-06-01), Hitomi et al.
patent: 5622144 (1997-04-01), Nakamura et al.

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