Internal-combustion engines – Charge forming device – Auxiliary air or gas used to inject fuel
Patent
1993-12-27
1995-11-14
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Auxiliary air or gas used to inject fuel
12317915, 123491, F02M 2300
Patent
active
054657016
ABSTRACT:
A fuel control system is provided for an internal combustion engine having at least one combustion chamber, an intake air passageway, a multipoint fuel injector associated with each engine combustion chamber and a cold start fuel injector having a fuel outlet open to the intake air passageway. An air valve has an air inlet fluidly connected to the intake air passage and an air outlet fluidly connected to the cold start fuel injector. This air valve movable between an open position and a closed position where in the open position, air flow through the air valve is directed to the cold start fuel injector. During a cold start engine operating condition, air flow through the air valve and cold start fuel injector enhances fuel atomization of the fuel from the cold start fuel injector thereby reducing the desirable engine emissions, and particularly, hydrocarbon engine emissions.
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Investigation of High Responses Fuel Injection Systems T. Yamauchi, T. Sasayama Hitachi America Ltd. U.S.A. pp. 48-54 Paper No. 90613 date unknown.
Development of Air-Assisted Injector System Kenichi Harada, Rio Shimizu, Kenji Kurita & Motoyasu Muramatsu Toyota Motor Corporation Paper No. 920294, date unknown.
Cold Start Performance of an Automotive Engine Using Prevaporized Gasline R. J. Boyle et al. The Engineering Society for Advancing Mobility Land Sea Air and Space Mar. 1, 1993.
Hitachi America Ltd.
Moulis Thomas N.
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