US 12,129,817 B2
Internal combustion engine
Yuki Suzuki, Kariya (JP); Mina Tachibana, Toyota (JP); and Tomihisa Tsuchiya, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Dec. 11, 2023, as Appl. No. 18/534,732.
Claims priority of application No. 2022-203311 (JP), filed on Dec. 20, 2022.
Prior Publication US 2024/0200517 A1, Jun. 20, 2024
Int. Cl. F02M 25/06 (2016.01); F01M 13/00 (2006.01); F02D 19/02 (2006.01); F02D 19/06 (2006.01); F02D 19/08 (2006.01); F02M 21/02 (2006.01)
CPC F02M 25/06 (2013.01) [F01M 13/0011 (2013.01); F02D 19/02 (2013.01); F02D 19/0644 (2013.01); F02D 19/0678 (2013.01); F02D 19/0689 (2013.01); F02D 19/081 (2013.01); F02M 21/0275 (2013.01); F02D 2250/08 (2013.01)] 1 Claim
OG exemplary drawing
 
1. An internal combustion engine, comprising:
an injector for injecting gaseous fuel, the injector including:
a nozzle hole configured to inject the gaseous fuel;
a nozzle valve configured to open and close the nozzle hole; and
a seat surface on which the nozzle valve is seated; and
an inflow passage for conducting blow-by gas in a crankcase into the nozzle hole,
wherein the internal combustion engine further comprises:
a control valve configured to open and close the inflow passage; and
processing circuitry configured to control opening and closing of the control valve, and
the processing circuitry is configured to
calculate an evaporation amount of oil from the seat surface; and
open the control valve to conduct the blow-by gas into the nozzle hole when the evaporation amount is greater than or equal to a threshold value.