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IMPCO U.S.-made single-fuel LPG gas conversion kit for forklifts
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  • IMPCO U.S.-made single-fuel LPG gas conversion kit for forklifts

IMPCO U.S.-made single-fuel LPG gas conversion kit for forklifts

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Conversion Kits

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  • Product Description

  • 　　 Advantages of LPG conversion kits:

    　　1. Significantly reduce environmental pollution

    　　Compared with gasoline, LPG use can reduce carbon monoxide emissions by 80%, hydrocarbon emissions by 75%, and nitrogen oxide emissions by a significant margin.

    　　II. Economic Efficiency:

    　　1. When LPG is used as fuel, the air-fuel mixture entering the engine is a dry mixture, eliminating the atomization and carbon buildup issues associated with gasoline. This results in superior lubrication and significantly reduces engine maintenance costs.

    　　2. It helps improve engine performance: LPG is primarily composed of propane, which boasts excellent anti-knock properties and minimizes detonation, significantly reducing engine noise. Its complete combustion prevents carbon buildup, substantially extending the engine’s service interval and cutting maintenance costs by 50% to 80%.

    　　3. Reduce fuel costs: According to theoretical calculations, the mileage per liter of gasoline and per liter of LPG is essentially the same; however, it is clear that LPG is one-third cheaper than gasoline per liter.

    　　III. Safety:

    　　Because every component of the entire “fuel system” is manufactured exclusively by the U.S. company IMPCO and has undergone meticulous design and rigorous testing, its performance is both safe and reliable. Moreover, since LPG has a higher autoignition temperature than gasoline and a large latent heat of vaporization, it exhibits an inherent self‑cooling effect, thereby significantly enhancing its safety.

    　　Our company’s LPG conversion kits are designed for both carbureted and fuel-injected forklift engines.

    　　The basic operating principle is as follows:

    　　LPG is stored in steel cylinders. Before starting the forklift, open the manual valve at the cylinder outlet. The liquid LPG passes through a filter and a vacuum‑actuated shut‑off valve: the filter removes impurities from the liquid, while the internal valve closes immediately when the vacuum signal from the carburetor is lost—e.g., if the internal combustion engine stops for any reason—thereby cutting off the LPG flow. As the LPG flows into the vaporizer/regulator, it is heated and vaporized, undergoing two stages of pressure reduction to reach the operating pressure required by the engine. However, the internal valve remains normally closed; LPG only begins to flow when the engine’s operation generates a vacuum suction. Because the vaporization process absorbs significant heat, to prevent icing, hot engine coolant must be routed to the vaporizer/regulator. At this point, the gaseous LPG enters the LPG mixer, where it is blended with clean air in a precisely controlled ratio to form a combustible gas that is fed into the engine’s combustion chamber, enabling the engine to run smoothly and deliver power. In a dual‑fuel system, when switching to gasoline, simply activate the fuel‑selection switch. The system automatically closes the LPG supply via a solenoid valve, allowing the gasoline supply to operate normally.

    　　Technical Specifications and Model Number

     

     

    Hefei Guanqi Intelligent Technology Co., Ltd. 　　

    　　Pressure regulator model: COBRA pressure regulator

    　　Fuel type: LPG liquid/gas

    　　Inlet pressure: Maximum 21.51 bar

    　　Minimum value: 207 kPa

    　　Outlet pressure: First-stage pressure reduction -0.37 kPa

    　　Secondary pressure reduction: -0.12 kPa

    　　Power: 100 hp (75 kW)

    　　Operating temperature range: -40°C to 121°C

     

    　　Heating: Engine cooling circulating water

     

     

    Hefei Guanqi Intelligent Technology Co., Ltd. 　　Filter Model: VFF30 Vacuum Fuel Valve/Filter

    　　Fuel type: LPG (liquid/gas), natural gas

    　　Inlet pressure: Maximum 21.51 bar

    　　Flow rate 12.6 L/s

    　　Opening pressure: minimum opening pressure 0.12 kPa

    　　Fully open pressure: 2.86 kPa

    　　Minimum operating pressure: 0.50 kPa

    　　Operating temperature range: -40°C to 121°C

     

     

     

     

     

    Hefei Guanqi Intelligent Technology Co., Ltd. 　　Mixer Model: MODEL CA55 Mixer

    　　Fuel type: LPG, natural gas

    　　Inlet pressure: -0.37 kPa

    　　Operating temperature range: -40°C to 121°C

    　　Diaphragm material N/A

    　　Power: 73 hp (54 kW)

     

     

     

     

    　　Working Principle Diagram

    Working Principle Diagram

    　　Introduction to Workflow Diagrams

    　　

    Hefei Guanqi Intelligent Technology Co., Ltd.

     

    　　⑴ Mixer ⑵ Vaporizer ⑶ Vacuum shut-off valve/filter ⑷ Pipeline pressure relief valve ⑸ Tee fitting ⑹ Cylinder support bracket ⑺ Liquid level gauge ⑻ 80% liquid-level space ⑼ Pressure relief valve ⑽ Filling valve ⑾ Liquid outlet valve ⑿ Vapor-phase line ⒀ 80% liquid-level line ⒁ Fuel‑level float ⒂ Drain line

    　　

    Hefei Guanqi Intelligent Technology Co., Ltd.

     

    　　LPG forklifts are available in single‑fuel and dual‑fuel configurations, which differ slightly in their system architecture. Dual‑fuel forklifts retain the gasoline carburetor and incorporate a switch to toggle between the two fuel sources. The operating principle is as follows: LPG is stored in liquid form within a cylinder; upon engine start-up, the liquid LPG passes through a filter and a vacuum shut‑off valve. This valve both removes impurities from the liquid LPG and, based on the engine’s vacuum signal, either closes or opens the LPG supply line. As the LPG flows into the vaporizer/regulator, it is heated and vaporized, undergoing two stages of pressure reduction to reach the pressure required for internal‑combustion engine operation. The gaseous LPG then enters the mixer, where it is blended with clean air in a precisely controlled ratio to form a combustible gas mixture that is delivered to the engine’s combustion chamber, enabling the engine to run smoothly and generate power.

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