Title:
ACCUMULATING FUEL INJECTION DEVICE
Document Type and Number:
Japanese Patent JP3416682
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To perform a limp-home mode control limiting the operating range of an engine to prevent an engine failure when a fuel pressure detecting means for detecting the fuel pressure in an accumulator is judged to be out of order.
SOLUTION: Fuel pressurized by a fuel pump 1 is stored in a first accumulator 3 and supplied to fuel injection nozzles 9 through a first control valve 5, a fuel passage 10a, and is supplied to a second accumulator 4 and stored in it. The fuel pressure in the second accumulator 4 is controlled by a second control valve 34. When a first fuel pressure detecting means 3a for detecting the fuel pressure in the first accumulator 3 fails, or when a second fuel pressure detecting means 4a for detecting the fuel pressure in the second accumulator 4 fails, a control means 8 stops high pressure-low pressure switching injection to close the second control valve 34, and to keep the pressure of a fuel system at the same level, and performs proper control by a limp-home mode for injecting fuel at an allowable pressure in the second accumulator 4.
Inventors:
Shin Koketsu
Keiki Tanabe
Keiki Tanabe
Application Number:
JP33573598A
Publication Date:
June 16, 2003
Filing Date:
November 26, 1998
Export Citation:
Assignee:
Mitsubishi Fuso Truck and Bus Corporation
International Classes:
F02M47/00; F02D41/22; F02M55/02; F02M63/00; (IPC1-7): F02D41/22; F02M47/00; F02M55/02; F02M63/00
Domestic Patent References:
| JP10227268A | ||||
| JP8284722A | ||||
| JP693936A | ||||
| JP8296520A | ||||
| JP112148A | ||||
| JP1077892A |
Other References:
【文献】国際公開98/009068(WO,A1)