A LH2 engine fuel system on board - Cold GH2 injection into two-stroke engine with LH2 pump

Conference · Thu Jan 01 00:00:00 EST 1981 · AIChE Symp. Ser.; (United States)

OSTI ID:5613549

Furuhama, S ^[1]; Kobayashi, Y

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1. Musashi Institute of Technology, Tokyo, Japan

An LH2-tank with a range of 400 km was installed in the rear trunk of a small passenger car in June, 1980. Tests demonstrated the overall feasibility of a hydrogen-fueled car: the tank attained a maximum power 20% to 20% higher than its gasoline counterpart and about twice as high as those of premixed engines. There was no backfire or knocking, and a very low NOx emission level was achieved by injecting -30 to -50 C cold hydrogen gas, pressurized by an LH2-pump, into the two-stroke engine. The LH2-pump was developed by the Musashi Institute of Technology the barrel and the plunger are made of metal and a durable, low friction material, respectively. The plunger clearance was reduced to about 3 microns under operating conditions, thereby making fuel leakage from the plunger clearance negligible. Proper tank pressures were obtained according to the pump speed. The maximum speed of the car was recorded at 135 km/h. Future objectives include the production of an engine with a higher compression ratio through the development of a high pressure pump having a discharge pressure above 6 MPa, and the improvement of the heat insulation performance of the LH2-tank.

• OSTI ID: 5613549
• Report Number(s): CONF-810804-
• Journal Information: AIChE Symp. Ser.; (United States), Vol. 77:208; Conference: 20. national heat transfer conference, Milwaukee, WI, USA, 2 Aug 1981
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
AUTOMOBILES
HYDROGEN FUELS
COMPRESSION RATIO
DESIGN
EXHAUST GASES
GAS INJECTION
INTERNAL COMBUSTION ENGINES
LIQUID FUELS
LOW TEMPERATURE
ENGINES
FLUID INJECTION
FLUIDS
FUELS
GASEOUS WASTES
GASES
HEAT ENGINES
SYNTHETIC FUELS
VEHICLES
WASTES
330800* - Emission Control- Alternative Fuels