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Research and Development of LNG Vehicle for Practical Use
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English
Abstract
As alternative fuel, natural gas holds a dominant position with widely distributed resources in the world and a low CO2 emission rate compared with the other fuels for automobile. Natural gas should be used in liquid phase (LNG) especially in automobile use due to considerations of energy density.
Research and development was conducted for a practical LNG vehicle equipped with a LNG engine and LNG supply and engine control systems. The LNG engine system was given a high compression ratio, manifold gas injection, and spark ignition for the effective use of natural gas. For the components of LNG supply system, LNG tank, vaporizer, LNG control valve and gas injector were developed. The LNG tank and the LNG control valves were given super insulation constructions to prevent gas boil off. LNG was vaporized using heat from the radiator. The gas injector is controlled by a solenoid coil for optimum fuel supply. A computer using fuzzy logic was developed in part for the engine control system.
The LNG vehicle was tested for exhaust gas emissions, vehicle dynamics, and driveability. The exhaust gas emissions were lower than Japan 10 and 11 mode regulation. From these test results, the technical potential of the LNG vehicle was made clear as a clean alternative fuel vehicle.
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Authors
- Yoshiyuki Ko - Japan Automobile Research Institute, Inc.
- Katsuyuki Kurihara - Japan Automobile Research Institute, Inc.
- Takayuki Sakai - Japan Automobile Research Institute, Inc.
- Ryuji Osuga - Japan Automobile Research Institute, Inc.
- Byung-Chul Choi - Japan Automobile Research Institute, Inc.
- Tadashi Ayusawa - Japan Automobile Research Institute, Inc.
- Eikichi Kim - Japan Automobile Research Institute, Inc.
Citation
Ko, Y., Kurihara, K., Sakai, T., Osuga, R. et al., "Research and Development of LNG Vehicle for Practical Use," SAE Technical Paper 920594, 1992, https://doi.org/10.4271/920594.Also In
References
- Akimoto Minoru On natural gas automobiles Low Pollution Cars International Symposium '90 Sep. 1990
- Miyata et al. The Development and Present State of Natural Gas Vehicles High Pressure Gas 27 11 1990
- Gaseous Fuels and Other Alternative Fuels SAE SP-832 August 13-16 1990
- Affleck W. S. et al. Converting a Small Car to LNG: What are the Problems and What Can it Do for Economy and Emissions? SAE 760376
- Sakai T. et al. Purification Characteristics of Catalytic Converters for Natural Gas Fueled Automotive Engine IPC-6 912599