Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1990-04-19
1991-09-10
Wolfe, Willis R.
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9016, 180197, B60K 2816, F01L 126
Patent
active
050464612
ABSTRACT:
A valve control system controls the valve lift characteristic of at least one set of a set of inlet valves and a set of exhaust valves of an internal combustion engine installed in an automotive vehicle having driving wheels. When the engine is in a specific engine operating region, changeover of the valve lift characteristic is inhibited even when an excessive slip state of the driving wheel(s) is detected, whereas changeover of the valve lift characteristic is permitted when the engine is in other specific operating regions which are defined by the engine rotational speed and the engine load. Restoration of the changed valve lift characteristic to one selected before the change is retarded when the excessive slip state of the driving wheel(s) is eliminated. The engine output is reduced when the valve lift characteristic is restored.
REFERENCES:
patent: 4800850 (1989-01-01), Yoshida et al.
patent: 4883027 (1989-11-01), Oikawa et al.
patent: 4921064 (1990-05-01), Wazaki et al.
patent: 4959794 (1990-09-01), Shiraishi et al.
patent: 4969102 (1990-11-01), Tamura et al.
patent: 4971164 (1990-11-01), Fujita et al.
Kanehiro Masaki
Sakaguchi Masakazu
Honda Giken Kogyo Kabushiki Kaisha
Lo Weilun
Wolfe Willis R.
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