US 12,173,674 B1
Fuel supply device for gas fuel
Ryo Tanaka, Nisshin (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jun. 18, 2024, as Appl. No. 18/746,160.
Claims priority of application No. 2023-122503 (JP), filed on Jul. 27, 2023.
Int. Cl. F02M 37/00 (2006.01); F02M 31/02 (2019.01); F02M 31/20 (2006.01)
CPC F02M 37/0017 (2013.01) [F02M 31/02 (2013.01); F02M 31/20 (2013.01); F02M 37/0047 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A fuel supply device for a gas fuel, the fuel supply device comprising:
a tank that stores the gas fuel;
a fuel injection valve configured to supply the gas fuel to a cylinder of an internal combustion engine;
a fuel passage through which the gas fuel is supplied from the tank to the fuel injection valve; and
processing circuitry, wherein
a heat exchanger is connected to the fuel passage and configured to exchange heat with the gas fuel,
the heat exchanger includes a first heat exchanger and a second heat exchanger in which a temperature of a heat medium is lower than a temperature of a heat medium in the first heat exchanger, and
when an actual temperature of the gas fuel is lower than a target temperature of the gas fuel and a temperature difference between the actual temperature of the gas fuel and the target temperature of the gas fuel is greater than a threshold value, the processing circuitry is configured to execute a process that increases a ratio of an amount of the gas fuel that undergoes heat exchange in the first heat exchanger to an amount of the gas fuel that undergoes heat exchange in the heat exchanger to be greater than that when the temperature difference is less than the threshold value.