Dual Injection (Port And Direct)
Dual injection combines port injectors and direct injectors in one petrol engine and uses each where it works best.
What is Dual Injection (Port And Direct)?
Port injection washes the intake valves and reduces carbon build-up. Direct injection gives better efficiency and knock resistance at high load. The engine control unit blends the two as needed. Several carmakers adopted dual injection to tackle intake valve deposits in direct-injection engines.
How it works
The ECU decides how much fuel each injector type delivers depending on speed and load.
Why it matters for your car
It adds parts and cost to the fuel system. Both injector types still need clean, quality fuel.
Other terms
- Blower Resistor (Fan Speed Resistor)
- Car Restoration
- Dyno Test (Dynamometer)
- EV Mode (Electric-only Mode)
- EV Route Planner
- Historic Vehicle Registration (Classic Plates)
- Ignition Advance
- Jump-start
- Labour Time (Flat-rate Time)
- Open Circuit
- Patina
- Piston Pin (Wrist Pin, Gudgeon Pin)
- Power Mirror
- Power-folding Mirrors
- Skidding (Losing Grip)
- Steering Wheel
- Three-Peak Mountain Snowflake (3PMSF)
- Tow Bar (Trailer Hitch)
- Tyre Pressure Placard
- Welcome Lights (Approach Lighting)