Modular position controller for variable valve timing

Details Modular position controller for variable valve timing Modular position controller for variable valve timing

1989-07-20

1990-03-20

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

F01L 134

Patent

active

049091948

ABSTRACT:
A variable valve timing system utilizes a closed-loop control for controlling the valve phasing wherein the closed-loop control receives a command input from the engine ECU. The command input is a pulse width modulated waveform that is synchronized with engine TDC.

REFERENCES:
patent: 4494496 (1985-01-01), Nakamura et al.
patent: 4517934 (1985-05-01), Papez

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