Patent ID: 11885274
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 6:
7. A non-transitory computer-readable memory medium that stores a program for causing a processor to execute a control process for an internal combustion engine, the control process comprising:
injecting fuel into an intake port using a port injection valve of the internal combustion engine;
directly injecting the fuel into a cylinder of the internal combustion engine using a direct injection valve of the internal combustion engine;
in response to the internal combustion engine being started, executing an increase correction control for the fuel;
obtaining a first temperature of the intake port, a second temperature of a piston in the cylinder, and a third temperature of a wall surface of a cylinder bore, wherein the cylinder bore is defined by a cylinder inner wall of the cylinder;
determining whether warm-up in the intake port is completed based on the first temperature;
in response to determining that the warm-up in the intake port is not completed, executing a first mode, which executes, based on an engine rotation speed and an engine load factor of the internal combustion engine, (a) a dual injection mode or (b) a direct injection mode, wherein
the dual injection mode injects the fuel from the direct injection valve and the port injection valve, and
the direct injection mode injects the fuel only from the direct injection valve without injecting the fuel from the port injection valve;

in response to determining that warm-up in the intake port is completed, executing a determination process determining whether warm-up in the cylinder is completed based on the second temperature or the third temperature;
in response to determining that the warm-up in the cylinder is not completed, executing a second mode, which executes, based on the engine rotation speed and the engine load factor, (a) the dual injection mode, (b) the direct injection mode, or (c) a port injection mode, wherein the port injection mode injects the fuel only from the port injection valve without injecting the fuel from the direct injection valve; and
in response to determining that the warm-up in the cylinder is completed, executing a third mode, which executes,
(i) the direct injection mode regardless of the engine rotation speed and the engine load factor, and
(ii) a reduction process setting a first increase correction amount of fuel to be less than a second increase correction amount of fuel, wherein the first increase correction amount of fuel is obtained through the increase correction control when executing the direct injection mode in the third mode, and the second increase correction amount is obtained prior to the execution of the direct injection mode in the third mode.