US 12,000,350 B1
Controller for hydrogen engine
Atsushi Tabata, Okazaki (JP); Koichi Okuda, Toyota (JP); Nobuhiko Satake, Toyota (JP); and Daiki Sato, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Oct. 23, 2023, as Appl. No. 18/492,764.
Claims priority of application No. 2022-203309 (JP), filed on Dec. 20, 2022.
Int. Cl. F02D 41/04 (2006.01); F02D 19/02 (2006.01); F02D 41/14 (2006.01)
CPC F02D 41/042 (2013.01) [F02D 19/021 (2013.01); F02D 2041/1472 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A controller for a hydrogen engine, the controller comprising control circuitry configured to:
perform, after a stop request for the hydrogen engine, a water reduction process that reduces a proportion of water vapor in exhaust gas; and
stop the hydrogen engine after operating the hydrogen engine with the water reduction process executed, wherein
the hydrogen engine includes a forced induction device, and
the water reduction process sets a valve overlap amount of an intake valve and an exhaust valve of the hydrogen engine to be higher than the valve overlap amount obtained before the stop request.