Fuel supply device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYuki Suzuki, Tomihisa Tsuchiya
Life of this patent
Estimating the term…
Abstract
A fuel supply device includes a fuel tank, a delivery pipe in which gas fuel to be supplied to a fuel injection valve is stored, a supply passage through which the fuel gas supplied from the fuel tank to the delivery pipe flows, a shut-off valve provided in the supply passage, an oil supply device that supplies oil to a downstream portion of the supply passage, and a controller. The controller executes an oil supply process during operation of the internal combustion engine to close the shut-off valve to stop the supply of the gas fuel to the delivery pipe, and supply the oil to the downstream portion by the oil supply device when the pressure in the delivery pipe has dropped.
Claims4
A fuel supply device for an internal combustion engine including a fuel injection valve that injects gas fuel, the fuel supply device comprising:
- a fuel tank that stores the gas fuel at high pressure;
- a delivery pipe that stores the gas fuel to be supplied to the fuel injection valve;
- a supply passage through which the fuel gas supplied from the fuel tank to the delivery pipe flows;
- a shut-off valve provided in the supply passage, the shut-off valve being closed when supply of the gas fuel to the delivery pipe is stopped;
- an oil supply device that supplies oil to a downstream portion of the supply passage, the downstream portion being a portion between a position of the shut-off valve and a part connected to the delivery pipe;
- and
- a controller that controls the shut-off valve and the oil supply device,
- wherein the controller is configured to execute an oil supply process during operation of the internal combustion engine to
- close the shut-off valve to stop the supply of the gas fuel to the delivery pipe, and
- supply the oil to the downstream portion by the oil supply device when the pressure in the delivery pipe is lower than that before the shut-off valve is closed.
Dependencies are inferred from the claim text.