OUTLINE
The 2GR-FKS engine uses a Direct injection 4-stroke gasoline engine Superior version (D-4S) system, which has both direct and port type fuel injection.
This system optimally controls the fuel injectors for direct injection and port injection in accordance with engine load. The system achieves improved engine performance, fuel economy, and clean emissions.
Fuel cut control is used to stop the fuel pump (for low pressure side) if any SRS airbag is deployed.
Fuel injector assemblies (for direct injection) with 1-hole type high pressure slit nozzle is used.
The Direct injection 4-stroke gasoline engine Superior version (D-4S) system is based on 2 types of fuel injection systems: the direct injection system and the port injection system. Fuel sent from the fuel tank assembly is delivered to the low-pressure and high-pressure fuel systems. The fuel delivered to the low-pressure fuel system is injected from the fuel injector assembly (for port injection) to the intake port. The fuel delivered to the high-pressure fuel system is pressurized by the fuel pump assembly (for high pressure side) and injected from the fuel injector assembly (for direct injection) to the combustion chamber.
The direct injection system mainly consists of the fuel pump assembly (for high pressure side), fuel delivery pipe assembly (for direct injection) and fuel injector assembly (for direct injection). In this system, the ECM controls the fuel pump assembly (for high pressure side) and fuel injector assembly (for direct injection) based on signals from various sensors, thus optimally controlling fuel pressure, injection volume, and injection timing.
The port injection system mainly consists of the fuel pump (for low pressure side), fuel delivery pipe with sensor assembly (for port injection), and fuel injector assembly (for port injection). In this system, the ECM controls the fuel injector assembly (for port injection) based on signals from various sensors, thus optimally controlling injection volume and timing.