Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1989-08-01
1991-04-23
Okonsky, David A.
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9015, F01L 134
Patent
active
050092030
ABSTRACT:
A control method for a valve-timing changeover in an engine having a valve operating mechanism capable of operating the intake valves or exhaust valves, or both, in a different manner, known as valve timing, such as the magnitude of valve lift or the duration the valve remains open, for improving the operation of the engine at different engine speeds. The control method uses various parameters to cause the changeover to occur when the engine output is substantially the same in the two different valve timing speed ranges between which the changeover is being made to minimize any shock loading during the changeover. In a fuel injection type engine, the preset quantities of fuel injection that would normally be supplied to the engine for those two different valve timing speed ranges are used to determine the engine output and return the proper time for the changeover.
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patent: 4534323 (1985-08-01), Kato et al.
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patent: 4800850 (1989-01-01), Yoshida et al.
patent: 4807574 (1989-02-01), Shibata et al.
Honda Giken Kogyo Kabushiki Kaisha
Lo Weilun
Okonsky David A.
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