US 11,795,884 B2
Control device for internal combustion engine
Shigemasa Hirooka, Susono (JP); Koichi Kitaura, Odawara (JP); Yoshio Yamashita, Susono (JP); Shingo Korenaga, Nagoya (JP); Katsuhiro Ito, Nagoya (JP); and Hikaru Shiozawa, Susono (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Aug. 29, 2022, as Appl. No. 17/897,594.
Claims priority of application No. 2021-158973 (JP), filed on Sep. 29, 2021.
Prior Publication US 2023/0094717 A1, Mar. 30, 2023
Int. Cl. F02D 41/02 (2006.01); F02D 41/30 (2006.01); F01N 3/10 (2006.01); F01N 3/20 (2006.01)
CPC F02D 41/0235 (2013.01) [F01N 3/108 (2013.01); F01N 3/2026 (2013.01); F02D 41/3076 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A control device for an internal combustion engine,
the control device being applied to an internal combustion engine equipped with an electric heating catalyst system provided with an electric heating catalyst in which a catalyst carrier is heated by energizing the catalyst carrier, the electric heating catalyst being an exhaust gas reduction catalyst in which a catalyst is supported on the catalyst carrier that generates heat by energization, the catalyst carrier separated from a case of the electric heating catalyst system by an insulating mat, and
the control device
executes a preheating process to warm up the exhaust gas reduction catalyst prior to a start of the internal combustion engine by controlling a power supply device to supply electric power to the electric heating catalyst, when the control device determines that a temperature of the exhaust gas reduction catalyst is lower than an activation temperature,
executes a determination process for determining whether water is adhered to the catalyst carrier, and
starts the internal combustion engine without executing the preheating process when the control device determines by the determination process that water is adhered to the catalyst carrier, even when the control device determines that the temperature of the exhaust gas reduction catalyst is lower than the activation temperature.