Fuel Injectors
The electronic fuel injector (injection valve) is the termination point of the entire fuel delivery system. There is a very small allowable variance in the quality and spray pattern of the fuel delivered. Failure of this valve will result in rough idle, poor performance, and reduced mileage.
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Hose Style |
O-Ring/Grommet |
Galley |
Fuel Injector Types
Peak and Hold
The peak and hold driver design usually has a resistance of 1.0 to 4.0 ohms. Battery voltage is applied to the injector until a predetermined current level is reached. The current is then reduced and held during the duration of the pulse width. It is imperative that the injector and driver characteristics are matched between the injectors so the switch from peak to hold does not occur out of sequence with the injector being fully opened.
Saturation
Saturation driver design usually has a resistance of 10.0 to 17.0 ohms or a lower resistance when used with a ballast resistor. The injector driver is fully on during the entire injector pulse width. This design reduces heat build up and dissipation at the driver, but has a slower injector driver response time.
Delivery System
Fuel is delivered to the intake runners in one of two methods, the Pintal design or Disc design. Each design has its own distinct characteristics, so NEVER substitute one design for that of original equipment. The vehicle manufacturer designed, engineered and built the intake runners and valve assemblies to accommodate a specific design whether it is a Pintal or a disc.
Throttle Body vs. Multi-port Delivery
Throttle Body Injection (TBI) contains one or two injectors housed within a unit called the throttle body. This looks like a carburetor and sits on top of the engine. As opposed the multi-port injection system that has one injector per cylinder which will allow the vehicle to achieve increased performance, better gas mileage, and lower exhaust emissions
The Python Plus Fuel Injector
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All remanufacturing including, coil winding, CNC machining, plastic injection molding, fuel injector assembly, testing and boxing completed in our 60,000 square foot, Stanton, California plant.
- All torn, bent, pitted or damaged Pintals are replaced.
- All pitted or worn Pintal seats are discarded.
- All replacement coils are wound and coated to exceed OEM specifications. Oversized brass electrical prongs are utilized to improve harness fit and conductivity.
- All filter baskets are replaced.
- Molded electrical connectors contain enlarged locating ribs to improve harness fit.
- O-rings replaced.
- All injectors are tested at least twice for the following:
- Leak testing at three times the required operating pressure
- Resistance testing to for applications OEM specifications
- Repetitive stop and go spray pattern examinations
- Spray pattern is tested at varying engine speeds to assure optimal fuel economy.
- Flow rate precisely metered to the appropriate pulse width to within 2% of OEM specifications.
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