Fuel Injection system

Details Fuel Injection system Fuel Injection system

1995-05-30

1996-07-09

Nelli, Raymond A.

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

F02B 300

Patent

active

055334814

ABSTRACT:
A fuel injection system having a fuel injection pump whose high-pressure delivery is determined by means of an electrically controlled valve, which controls a relief conduit; the phase of the preinjection quantity supply and the main injection quantity supply are determined by the closing of this valve. To increase the precision of the injection, the injection system is provided with an injection valve, whose valve needle withdraws fuel from a damping chamber during the opening stroke via a throttle opening, which decreases with increasing valve needle stroke. Hence the opening motion of the valve needle becomes invulnerable to pressure surges, and the precision of the controlled fuel injection is increased.

REFERENCES:
patent: 5199398 (1993-04-01), Nylund
patent: 5231962 (1993-08-01), Osuka et al.
patent: 5438966 (1995-08-01), Teegen
patent: 5477834 (1995-12-01), Yoshizu

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