Valve operating mechanism for internal combustion engine

Details Valve operating mechanism for internal combustion engine Valve operating mechanism for internal combustion engine

1989-07-31

1990-10-30

Wolfe, Willis R.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123 9016, 123 9017, 123 904, 123 9044, F01L 126, F01L 134

Patent

active

RE0334111

ABSTRACT:
A valve operating mechanism for operating a plurality of valves of a particular cylinder of an internal combustion engine includes a camshaft rotatable in synchronism with rotation of the internal combustion engine and having at least one cam. At least one of a plurality of cam followers slidably engages the cam for selectively operating the valves according to a cam profile of the cam. The cam followers are selectively interconnected and disconnected to operate the valves in different speed ranges of the internal combustion engine, the speed ranges including a range in which all of the valves remain inoperative. The camshaft has one or two annular raised portions in addition to the cam, and the cam followers include one or two cam followers which slidably engage the raised portion or portions. The valves remain inoperative by the annular portion or portions and are operated in a high-speed range by the cam, or selectively in low- and high-speed ranges by low- and high-speed ranges.

REFERENCES:
patent: 4499870 (1985-02-01), Aoyama
patent: 4523550 (1985-06-01), Matsuura
patent: 4534323 (1985-08-01), Kato et al.
patent: 4537165 (1985-08-01), Honda et al.
patent: 4545342 (1985-10-01), Nakano et al.
patent: 4576128 (1986-03-01), Kenichi
patent: 4584974 (1986-04-01), Aoyama et al.
patent: 4589387 (1986-05-01), Miura et al.
patent: 4612884 (1986-09-01), Ajiki et al.
patent: 4656977 (1987-04-01), Nagahiro et al.
patent: 4690110 (1987-09-01), Nishimura et al.

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