Fuel injection pump for internal combustion engines, in particul

Details Fuel injection pump for internal combustion engines, in particul Fuel injection pump for internal combustion engines, in particul

1990-06-22

1991-12-17

Dolinar, Andrew M.

Internal-combustion engines

Combustion chamber means having fuel injection only

Combination igniting means and injector

123300, F02M 4500

Patent

active

050727060

ABSTRACT:
A fuel injection arrangement for internal combustion engines, particularly for diesel engines, is indicated, in which the fuel injection is divided into an advance injection and a main injection for the purpose of noise reduction. An advance injection unit (27) is provided for the purpose of proportioning the advance injection quantity and a fuel injection pump of a conventional construction is provided for proportioning the main injection quantity. For an optimal design of the advance injection quantity with respect to noise reduction without influencing the main injection quantity, the advance injection unit (27) comprises a high-pressure storage (28), which is compressed to injection pressure, and at least one solenoid valve (30), which is controlled with respect to time. The advance and main injections are preferably effected via separate nozzle cross sections (21, 22).

REFERENCES:
patent: 4033301 (1977-07-01), Walton
patent: 4590904 (1986-05-01), Wannenwetsch
patent: 4831982 (1989-05-01), Baranescu

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