Patent ID: 11933238
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 4:
5. A control method for an internal combustion engine, the control method being employed in the internal combustion engine, the internal combustion engine including cylinders in which fuel is burned, an intake passage through which intake air is drawn, an exhaust passage through which exhaust gas is discharged from the cylinders, pistons each reciprocating in a corresponding one of the cylinders, a crankshaft that rotates as the piston reciprocates, fuel injection valves each supplying a corresponding one of the cylinders with fuel, and a throttle valve located in the intake passage to regulate an amount of the intake air flowing through the intake passage, the control method comprising:
restarting the internal combustion engine from a state where fuel combustion in the cylinders is suspended, wherein the cylinders include a first combustion cylinder in which first combustion occurs when the internal combustion engine is restarted from the state where the fuel combustion in the cylinders is suspended;
suspending the fuel combustion in the cylinders and controlling the throttle valve to a closed state when a predetermined condition is satisfied;
calculating an amount of fuel injected into the first combustion cylinder based on a position of the piston in the first combustion cylinder in a case where a rotation speed of the crankshaft obtained when the restart was requested is zero; and
calculating the amount of fuel injected into the first combustion cylinder based on the rotation speed in a case where the rotation speed obtained when the restart was requested is higher than zero.