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LIMA LPG-systems
LPG System Components
1. ECU
The Lima-ECU controls the LPG system by:
- Measuring the OEM signals, petrol-injectors, rpm, MAP, coolant, etc.
- Controlling the Lima LPG-solenoids
- Controlling the Lima LPG-injectors
- Shutting off the petrol-injectors
- Displaying fuel choice
- Communication with the diagnostics program
- Injector drivers based on “closed loop peak & hold current control”
- Constant monitoring of the injector diagnostics:
- Overload
- Driver temperature
- Short circuit
- No load
- Communication with the diagnostics program
- Diagnostics software compatible with Windows 98, 2000, XP and Vista
- CAN-controller (2.0b) enables communication with OEM CAN-bus
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2. Reducer
This device converts liquid LPG to vaporized LPG using the coolant system of the engine. It also serves to reduce the tank pressure to working pressure. |
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| Type |
Diaphragm type, single stage pressure reducer. |
| Min. input pressure |
2 bar (30 Psi). |
| Max. input pressure |
18 bar (260 Psi). |
| Working pressure |
0.6 Bar (9 Psi) to 1.6 bar (23 Psi) (adjustable). |
| Fuel |
Liquefied Petroleum Gas (LPG). |
| Gas outlet |
Rotating elbow connection, 16mm outside diameter |
| Torque setting |
front / rear cover bolts 8 +0.5 Nm |
| Coolant connections |
2 Rotating elbow connections, 16mm outside diameter |
| Weight |
2.1 kg (including shut-off solenoid valve). |
| Operating temperature |
From -40° C to 120°C (-40° F to 248° F). |
| Max. operating pressure |
4.5 bar (65 Psi) according to R67-01 (Opening of the pressure relief valve). |
| Remark |
all pressures are absolute |
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3. LPG Filter Unit
This device is filtering the fuel to prevent damage to the injectors. The filter unit is also equipped with a pressure/temperature sensor for the fuel. |
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| Type |
Replaceable filter. |
| Layer |
3-fold fibreglass layers |
| Max. input pressure |
18 bar (260 Psi) |
| Working pressure |
0.6 bar (9 Psi) up to 1.6 bar (23 Psi). |
| Operating temperature |
From -40°C (-40°F) to 120°C (248°F). |
| Gas inlet |
16 mm outside diameter, straight. |
| Gas outlet |
11 mm outside diameter, one or two connections. |
| Weight |
0, 11 kg. |
| Fuel |
Liquefied Petroleum Gas (LPG) or Compressed Natural Gas CNG). |
| Max. operating pressure |
4.5 bar (65 Psi). |
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4. LPG Injectors
Gaseous Fuel Injectors with 0.45 MPA max working pressure, electrical coil resistance of 2.5Ohm, AMP/Delphi superseal incorporated connector. The injectors are available in different versions with 2, 3 and 4 injectors, with gas INLET option for both sides of the rail. |
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Max. Working Pressure:
- 0,45 MPA
Approvals:
- E4 67R 01 e E4 110R
Configurations:
- standard flow and increased flow “BFC” available in the versions with 1,2,3 and 4 coils
- Coils with 1,2 and 6 Ohm upon request
Accessories included:
bracket and fixing accessories, M5 or M6 nozzles for intake manifold
Accessories not included:
- temperature sensor with/without connection for pressure sensor, connector with connection for pressure sensor only,
calibrated nozzles with internal diameter of 2.0, 2.2, 2.4, 2.6 and 2.8mm |
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5. Lima LPG Switch
The fuel switch used by the VSI-system controls the following functions: fuel choice. monitoring the fuel level. reporting errors.The fuel switch is operated by a touch key to switch from petrol to LPG and vice-versa. The fuel switch is also equipped with LED indicators to monitor the level of the fuel in the tank. When the LPG level is too low the reserve LED lights up. When there is an automatic switch-over to petrol because the LPG tank is empty, the driver is warned by a buzzer signal and a flashing LED indicator.
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