The purpose of the Fuel Injection System is to calibrate and optimize the fuel/air ratio that enters your vehicle’s engine. Fuel injection has recently become the primary fuel delivery system used in automotive petrol engines, almost completely replacing carburetors.
The injection system consists of electronic components and sensors. It must be kept clean and well calibrated in order to maximize the engine’s power and efficiency and to reduce gas consumption. Our Autotech Performance technicians can make sure that your vehicle’s fuel injection system remains highly efficient!
Main Components of the Fuel Injection System
- Electronic Control Unit (ECU)
- “Check Engine” Light / “Service
- Engine Soon” Light
- Fuel Injectors
- Fuel Pump
How does the Fuel Injection System work?
The fuel injection system consists of several Sensors located all around your vehicle. Every time you start your vehicle, the Electronic Control Unit (ECU) scans all these sensors to verify their functionality. The “Check Engine” Light (or “Service Engine Soon” Light) on the dashboard comes on during the scan and goes off when all sensors are functional.
While you are driving, these sensors continuously detect the values of numerous parameters: air pressure, air temperature, throttle angle, air density, fuel temperature, fuel pressure, oil pressure, coolant temperature, exhaust temperature, crankshaft angle, timing, engine rpm, speed, etc.
All these data are processed through the ECU to establish the amount of time the Fuel Injectors are open, injecting fuel into your engine’s intake ports. The fuel injectors are usually only open for a few milliseconds at a time. Each fuel injector consists of a nozzle and a valve. The power to inject the fuel comes from a Fuel Pump or pressure container located farther back in the fuel supply. The fuel going through the system is atomized by being forcibly pumped through a small nozzle under high pressure.
Signs of troubles related to your vehicle’s Fuel Injection System
- Fuel smell
- Low engine power
- Engine cranks but won’t start