Fuel pressure control apparatus for cylinder injection type...

Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C123S458000

Reexamination Certificate

active

06889666

ABSTRACT:
A fuel pressure control apparatus for a cylinder injection type engine capable of restarting the engine without fail notwithstanding increase of fuel pressure due to temperature rise immediately after stoppage of engine operation. Fuel is supplied from a high pressure fuel pump (5) to a fuel rail (2) to be injected by fuel injection valves (1) into combustion chambers (20) of cylinders. An ECU (10) estimates increment (ΔP) of the fuel pressure (PF) within the fuel rail (2) after stoppage of the engine operation on the basis of a water temperature (THW) and an intake air temperature (THA) to restrict a maximum value of a desired fuel pressure (Po) so that a sum value (PM) of the desired fuel pressure (Po) and the increment (ΔP) does not exceed the critical actuation pressure (Pi) of the fuel injection valve (1).

REFERENCES:
patent: RE36119 (1999-03-01), Kunishima et al.
patent: 6539921 (2003-04-01), Matsumura
patent: 6715470 (2004-04-01), Takahashi
patent: 07-253041 (1995-10-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Fuel pressure control apparatus for cylinder injection type... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fuel pressure control apparatus for cylinder injection type..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel pressure control apparatus for cylinder injection type... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3441181

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.