Internal combustion engine valve operating mechanism
First Claim
1. A reciprocating valve actuation and control system for the cylinders of an internal combustion engine, comprising:
- a poppet valve moveable between a first and second position;
a source of pressurized hydraulic fluid;
a hydraulic actuator including an actuator piston coupled to the poppet valve and reciprocating between a first and second position responsive to flow of the pressurized hydraulic fluid to the hydraulic actuator;
an electrically operated valve controlling flow of the pressurized hydraulic fluid to the actuator, said electrically operated valve including a linear latching motor comprising a solenoid coil associated with a permanent magnet, wherein the coil is energized to create a central axial repelling magnetic field relative to the permanent magnet field, and to generate concentric repelling and attractive fields to produce secondary repelling and tertiary attractive forces on the permanent magnet; and
control means generating electrical pulses to control the electrically operated valve.
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Accused Products
Abstract
The reciprocating valve actuation and control system includes a poppet valve moveable between a first and second position; a source of pressurized hydraulic fluid; a hydraulic actuator including an actuator piston coupled to the poppet valve and reciprocating between a first and second position responsive to flow of the pressurized hydraulic fluid to the hydraulic actuator; an electrically operated valve controlling flow of the pressurized hydraulic fluid to the actuator; and an engine computer that generates electrical pulses to control the electrically operated valve. The electrically operated valve includes a linear latching motor, which includes a solenoid coil associated with a permanent magnet, wherein the coil is energized to create a central axial repelling magnetic field relative to the permanent magnet field, and to generate concentric repelling and attractive fields to produce secondary repelling and tertiary attractive forces on the permanent magnet.
84 Citations
23 Claims
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1. A reciprocating valve actuation and control system for the cylinders of an internal combustion engine, comprising:
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a poppet valve moveable between a first and second position;
a source of pressurized hydraulic fluid;
a hydraulic actuator including an actuator piston coupled to the poppet valve and reciprocating between a first and second position responsive to flow of the pressurized hydraulic fluid to the hydraulic actuator;
an electrically operated valve controlling flow of the pressurized hydraulic fluid to the actuator, said electrically operated valve including a linear latching motor comprising a solenoid coil associated with a permanent magnet, wherein the coil is energized to create a central axial repelling magnetic field relative to the permanent magnet field, and to generate concentric repelling and attractive fields to produce secondary repelling and tertiary attractive forces on the permanent magnet; and
control means generating electrical pulses to control the electrically operated valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification