Method and apparatus for clean cold starting of internal combust

Details Method and apparatus for clean cold starting of internal combust Method and apparatus for clean cold starting of internal combust

1995-05-11

1996-10-22

Solis, Erick R.

Internal-combustion engines

Starting device

Auxiliary fuel supply device

1231795, 123576, 123578, 123525, F02B 100

Patent

active

055666531

ABSTRACT:
An improved starting system for internal combustion engines that normally use a liquid fuel such as gasoline. Gaseous fuels such as hydrogen, natural gas, propane, butane and the like are used in place of the liquid fuel during engine starting and for a selected period thereafter. When starting is initiated, the gasoline introduction system is disabled and introduction of the gaseous fuel in initiated. Rapid engine start promptly occurs, even under very cold ambient conditions. Once the engine has started and has run for a period sufficient to reach a reasonable operating temperature, the gaseous fuel introduction system is interrupted and the gasoline system is enabled and provides the fuel thereafter. If desired, gaseous fuel flow may continue for a short period after liquid fuel flow has begun. This system improves the life of the catalytic converter and the engine, reduces hydrocarbon and carbon monoxide emissions during starting and eliminates the need for special, higher cost, gasoline mixes for winter cold starting.

REFERENCES:
patent: 4936280 (1990-06-01), Langlois
patent: 5224457 (1993-07-01), Arsenault et al.
patent: 5228423 (1993-07-01), Oikawa et al.
patent: 5337722 (1994-08-01), Kurihara et al.
patent: 5357908 (1994-10-01), Sung et al.
patent: 5367996 (1994-11-01), Homik et al.
patent: 5388553 (1995-02-01), Burke et al.
patent: 5443052 (1995-08-01), Aslin

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