Valve stopping device for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYoshihiro Sakayanagi, Shigeki Miyashita
Life of this patent
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Abstract
Disclosed is a valve stopping device for an internal combustion engine that does not allow valves for all cylinders to stop in the closed state even in the event of a failure. The valve stopping device includes a control device 2 and a plurality of actuators 4A, 4B, 4C, 4D, which stop either an intake valve or an exhaust valve. The actuators 4A, 4D for some of a plurality of cylinders included in the internal combustion engine stop a valve in the closed state when energized. The actuators 4B, 4C for the remaining cylinders stop a valve in the closed state when energized. The control device 2 provides control on an individual actuator basis to determine whether or not to energize the actuators 4A, 4B, 4C, 4D.
Claims2
A valve stopping device for an internal combustion engine that is capable of stopping either an intake valve or an exhaust valve of the internal combustion engine having a plurality of cylinders on an individual cylinder basis or on an individual cylinder group basis, the valve stopping device comprising:
- actuators that are provided for some of the plurality of cylinders to stop a valve in the closed state when energized;
- actuators that are provided for the remaining ones of the plurality of cylinders to stop a valve in the closed state when de-energized;
- and
- a control device that provides control on an individual actuator basis to determine whether or not to energize the actuators.
A valve stopping device for an internal combustion engine that is capable of stopping either an intake valve or an exhaust valve of the internal combustion engine having a plurality of cylinders on an individual cylinder basis or on an individual cylinder group basis, the valve stopping device comprising:
- actuators that are provided for some of the plurality of cylinders to stop a valve in the closed state when energized for a predetermined valve stop instruction period (hereinafter referred to as the type 1 actuators);
- actuators that are provided for the remaining ones of the plurality of cylinders to stop a valve in the closed state when de-energized for a predetermined valve stop instruction period (hereinafter referred to as the type 2 actuators);
- shared signal lines that are shared by one type 1 actuator and one type 2 actuator, the valve stop instruction period of the type 1 actuator not overlapping with the valve stop instruction period of the type 2 actuator;
- and
- a control device that provides control on an individual shared signal line basis to determine whether or not to energize the actuators.
Dependencies are inferred from the claim text.