Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Patent
1991-11-14
1993-02-16
Cross, E. Rollins
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
123456, F02B 7700
Patent
active
051861380
ABSTRACT:
An apparatus for controlling a fuel pressure suitable for a direct injection type fuel injection internal combustion engine, using gasoline as a fuel. A low pressure pump and high pressure pump from a fuel tank are arranged in series between a reservoir tank and fuel injectors. A pressure at the output of the low pressure pump is detected to determine if the fuel tank is empty, and when it is determined from the pressure at the outlet of the small pump that the fuel tank is empty, the operation of the high pressure pump is stopped to thereby prevent a generation of bubbles in the reservoir tank. A fuel injection is stopped when there is a drop in the pressure in the reservoir tank.
REFERENCES:
patent: 4124013 (1978-11-01), Rivalto
patent: 4565170 (1986-01-01), Grieshaber et al.
patent: 4776315 (1988-10-01), Greiner
patent: 4807583 (1989-02-01), Thornthwaite et al.
patent: 4811710 (1989-03-01), Schmitt et al.
patent: 4811711 (1989-03-01), Stumpp et al.
patent: 5058553 (1991-10-01), Kondo et al.
patent: 5076227 (1991-12-01), Krieger
patent: 5095880 (1992-03-01), Ricks
Cross E. Rollins
Moulis Thomas
Toyota Jidosha & Kabushiki Kaisha
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