Hangzhou longer industry Co.,Ltd specializes in producing CNG/LPG conversion kits and related hardware for multipoint sequential injection system of cars. Such as Volkswagen, Hyundai, Toyota, Chery, BYD, Ford, GM and more. As a leading player of this area in China, we have a professional R&D team and a laboratory for product testing.

Our CNG conversion kits including 4 models: EG100, EG500,EG700 and EG800.

EG500 is an easy-learning debugging of multi-point injection system; for workers, it's easy to learn for understanding to diagnosis the system. It adopt the oxygen sensor signal and track the Injection signal of original vehicle at the real time by using the source of original vehicle's sensor. Operators modify dynamical the value of gas injection signal and make the gas injection signal and the original vehicle's injection be the same and modifies dynamical in order to make the vehicle more power/lower gas exhaust and lowest emission.

1, Working Voltage: 8 ~ 16V

2, Coil Resistance: 3 Ω

3, Peak & Hold:peak & hold

4, Cylinder Type: sequential Injection 3 or 4 cylinder

5, Input Signal: original injection petrol signal, oxygen sensor signal

6, Ambient Temperature: -40℃ ~ + 120℃

7,Waterproof level: flush resistant

8,Connection: 48 Pin

9,Diagnostics connector: RS232

1, ECU (Electronic Control Unit)

2, Wire Bundle of ECU

3, Switch Unit (include fuse, harness)

4, Reducing valve

5, Injector rail

6. High pressure solenoid valve

7, Gas filling valve

8, Pressure gauge

9, Filter

10, High pressure tube

11, Low pressure tube

12, Curve tube

13, Pump relay

14, Spare parts

EG800, the advanced multi-point injection system, has kinds of self-learning, self-adaptive and self-diagnosis functions. It adopt the signal of oxygen, MAP, speed, water/gas temperature, vacuum pressure and so on and track the Injection signal of original vehicle at the real time by using the source of original vehicle's sensor. It modifies dynamical the value of gas injection signal and make the gas injection signal and the original vehicle's injection be the same and modifies dynamical in order to make the vehicle more power/lower gas exhaust and lowest emission.

1, Working Voltage: 8 ~ 16V

2, Coil Resistance: ≥ 0.5 Ω

3, Peak & Hold:peak & hold

4, Cylinder Type: sequential Injection 3 / 4 / 6 / 8 cylinder

5, Input Signal: original injection petrol signal\fuel pressure signal\water temperature signal\gas temperature signal\vacuum pressure signal\oxygen sensor signal

6, Ambient Temperature: -40℃ ~ + 120℃

7,Waterproof Level: flush resistant

8,Connection: 48 Pin

9,Diagnostics Connector: RS232

1, ECU (Electronic Control Unit)

2, Wire Bundle of ECU (Harness)

3, Map Sensor

4, Switch Unit (Intelligence Indicator or Digital Changeover Switch)

5, Gas Temperature Sensor

6, Water Temperature Sensor

7, Reducing valve

8, Injector rail

9. High pressure solenoid valve

10, Gas filling valve

11, Pressure gauge

12, Filter

13, High pressure tube

14, Low pressure tube

15, Curve tube

16, Pump relay

17, Spare parts

1.    The air-fuel ratio of engine of engine is controlled with closed loop, therefore the exhaust gas emission is low (Euro 3 and Euro 4); And keep engine be more powerful

2.    Self-adaptive, self-diagnosis and self-learning function, No interference with the OBD system of the vehicle

3.    ECU set is suitable for both of LPG & CNG conversions, Optimized Varying Climate Conditions

4.    sequential gas injection system working in real time, assures optimum gas into each cylinder

5.    cooperation with lots of gas injectors well, adjusts opening time of each injector on the rail, Testing of the injectors enabling to diagnose the faulty injectors

6.    Takes signals in Real Time in all operating conditions to obtain optimum opening time of each injector.

a)    i.e. gas / water temperatures, manifold depression, rpm, petrol injection.

7.    High Reliability & Adaptability and User Friendly

8.    Easy Software Installation (Fully Windows Based)-Mapping & Calibration

9.    No Need of OMD Emulators

10.   Designed for ultra low emission

11.   Save to ECU/Load from ECU/Save to File/Load from File is all possible

12.   Pressure Sensor: Automatic switch to the gas when the gas is run out

13.   No need cutting off the wires thanks to sockets placed inside the injection connectors

14.   Diagnostic strategies are in force to enable automatic switching to gasoline mode should the system detect a fault, Auto fault clearance

15.   It manages full group motorisations, semi-sequential and sequential slave in one single card.

16.   Integrated Powerfully Microprocessors, Water Resistant-Waterproof Aluminums Box

EG700, the latest advanced multi-point injection system. It adopt the signal of MAP, vacuum pressure, speed, water/gas temperature, oxygen and so on and track the Injection signal of original vehicle at the real time by using the source of original vehicle's sensor. It modifies dynamical the value of gas injection signal and make the gas injection signal and the original vehicle's injection be the same and modifies dynamical in order to make the vehicle more power/lower gas exhaust and lowest emission. 

1, Working Voltage: 8 ~ 15V

2, Coil Resistance: ≥ 0.5 Ω

3, Peak & Hold:peak & hold

4, Cylinder Type: sequential Injection 3 / 4 cylinder

5, Input Signal: original injection petrol signal, fuel pressure signal, vacuum pressure signal, water temperature signal, gas temperature signal, oxygen sensor signal

6, Ambient Temperature: -40℃ ~ + 125℃

7,Waterproof Level: flush resistant

8,Connection: 48 Pin

9,Diagnostics Connector: RS232

1, ECU (Electronic Control Unit)

2, Wire Bundle of ECU (Harness)

3, Map Sensor

4, Switch Unit (Intelligence Indicator or Digital Changeover Switch)

5, Gas Temperature Sensor

6, Water Temperature Sensor

7, Reducing valve

8, Injector rail

9. High pressure solenoid valve

10, Gas filling valve

11, Pressure gauge

12, Filter

13, High pressure tube

14, Low pressure tube

15, Curve tube

16, Pump relay

17, Spare parts

1. The air-fuel ratio of engine of engine is controlled with closed loop, therefore the exhaust gas emission is low (Euro 3 and Euro 4); And keep engine be more powerful

2. ECU set is suitable for both of LPG & CNG conversions, Optimized Varying Climate Conditions

3. sequential gas injection system working in real time, assures optimum gas into each cylinder

4. Takes signals in Real Time in all operating conditions to obtain optimum opening time of each injector.

a) i.e. gas / water temperatures, manifold depression, rpm, petrol injection.

5. High Reliability & Adaptability and User Friendly

6. Easy Software Installation (Fully Windows Based)-Mapping & Calibration

7. No Need of OMD Emulators

8. Designed for ultra low emission

9. Save to ECU/Load from ECU/Save to File/Load from File is all possible

10.Pressure Sensor: Automatic switch to the gas when the gas is run out

11. No need cutting off the wires thanks to sockets placed inside the injection connectors

12. Diagnostic strategies are in force to enable automatic switching to gasoline mode should the system detect a fault, Auto fault clearance

13. It manages full group motorisations, semi-sequential and sequential slave in one single card.

14. Integrated Powerfully Microprocessors, Water Resistant-Waterproof Aluminums Box