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U.S. Department of Energy
Office of Scientific and Technical Information

Cold-start engine priming and air purging system

Patent ·
OSTI ID:6951471
This patent describes a system for priming an internal combustion engine which includes a carburetor having a fuel reservoir. It comprises: pump means having an inlet, first and second outlets, means responsive to an electrical priming control signal for feeding fuel under pressure to the first outlet, and means for feeding air entrained in fuel within the pump means to the second outlet, means for feeding fuel from a fuel supply through the carburetor reservoir to the inlet of the pump means, means coupled to the first outlet of the pump means for feeding fuel under pressure from the pump means to the carburetor, means coupled to the second outlet of the pump means for purging air from within the pump means, and electronic control means including means for initiating a priming operation and means responsive to the operation-initiating means for supplying the priming control signal to the pump means.
Assignee:
Walbro Corp., Cass City, MI
Patent Number(s):
A; US 4905641
Application Number:
PPN: US 7-324035A
OSTI ID:
6951471
Country of Publication:
United States
Language:
English