Patent ID: 11971142
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 6:
7. A hydrogen engine vehicle, comprising:
a hydrogen engine for vehicle driving; and
a hydrogen supplying device configured to supply the hydrogen engine with hydrogen gas,
wherein the hydrogen supplying device comprises
a liquid hydrogen pump configured to increase a pressure of liquid hydrogen stored in a liquid hydrogen tank;
an evaporator configured to convert the liquid hydrogen discharged from the liquid hydrogen pump into the hydrogen gas;
a pressure chamber configured to be filled with the hydrogen gas flowing therein from the evaporator and to supply the filled hydrogen gas to the hydrogen engine; and
a pump control unit configured to adjust a discharge flow rate of the liquid hydrogen pump, and configured to adjust, based on both a flow rate of hydrogen to be supplied to the hydrogen engine and an actual pressure in the pressure chamber, the discharge flow rate of the liquid hydrogen pump so as to match the actual pressure in the pressure chamber with a target pressure,

wherein the hydrogen engine vehicle further comprises
an engine control unit configured to adjust the flow rate of hydrogen to be supplied to the hydrogen engine; and
a flow rate sensor configured to detect an actual flow rate of hydrogen gas to be supplied to the hydrogen engine,

wherein the hydrogen supplying device further comprises a pressure sensor configured to detect the actual pressure in the hydrogen chamber, and
wherein the pump control unit is connected to the engine control unit, and is configured to
receive an input from the engine control unit, the input including one or both of a target flow rate of hydrogen gas to be supplied to the hydrogen engine and the actual flow rate of the hydrogen gas, and
adjust the discharge flow rate of the liquid hydrogen pump based on the one or both of the target flow rate and the actual flow rate of the hydrogen gas and also based on the actual pressure in the pressure chamber detected by the pressure sensor.