What should the resistance of an LPG injector be?
What should the resistance of an LPG injector be?
-high impedance injectors resistance must be between 11 and 15 ohms. If there is greater than 2Ω difference, choose and replace the highest or lowest resistance injector, whichever corresponds, to achieve a range inside 2Ω. Plug in the injector connector.
How is LPG injected into a petrol engine?
The LPG is kept in the liquid state and injected in the multi-point petrol fashion, hence engine starting at low temperatures is assisted (to around minus 40 degrees Celsius). There is no vaporizer to freeze the moisture present and hence the system. Mechanical fault in component.
How do you switch current on LPG injector?
Switch the current clamp on, press the ZERO button before connecting the clamp to the circuit. It is important to note that only one of the two wires have to be clamped, and not both of them. It doesn’t matter which cable is clipped with the current clamp: the positive or the negative one.
How to connect LPG injector to BNC test lead?
Channel C: Plug the 10:1 Attenuator to channel C of the CarScope Pro/LAN/Plus and connect a BNC test lead to the attenuator. Connect the red test lead to one of the injector wires and the black crocodile lead to the chassis ground.
What kind of injector is used for LPG?
Output signal is a series of pulses with a specific shape. There are two types of LPG/CNG injectors: high impedance type with resistance between 11 and 15 ohms. Each fuel injector has a supply passage and a return passage. The fuel injector rails have the same concentric design as the fuel lines.
How does the LPG ECU control the injectors?
Dedicated LPG ECU control of the injectors, using as the main input the duty cycle that the petrol ECU provides the petrol injectors, corrected by the LPG ECU for the gas injectors Feedback of the car’s original oxygen sensor (s) to correct small deviations from optimal mixtures
How does the LPG control system work in a petrol engine?
The LPG control system also provides an ‘injector replacement’ signal to the original ECU so that when the petrol injectors are switched off, no fault codes are generated. The huge advantage of taking this approach to controlling the gas injection is that all the factory petrol engine management logic remains in place.
How to ensure fuel injectors are receiving the correct range?
Step 1: Turn the car on. Turn the key to the second (ON) position for this test. You want battery power flowing, but don’t want the engine running. Step 2: Set up DVOM to measure DC voltage. Use the lowest range possible if the meter doesn’t auto range.
