Inventors:
Terry L. Molewyk - Nashville IN
Joseph M. Johnson - Nashville IN
Assignee:
Cummins Engine Company, Inc. - Columbus IN
International Classification:
F02M 3100
Abstract:
A burner assembly (18) for heating the intake air of an internal combustion engine (2) including a burner housing (32) containing a fuel passage (52, 66, 70, 72) and a glow plug (87) for heating the burner housing (32) upon start up of the burner to melt fuel wax deposits in the fuel passage (52, 66, 70, 72). The glow plug (87) includes a metal sheath (88) designed normally to contact air when energized at a rated level. The burner housing (32) includes a cavity (86) shaped to receive the glow plug (87) with a minimal clearance (a) large enough to prevent interference during assembly but small enough to allow metal-to-metal heat transfer into the housing (32) when the glow plug (87) is energized at twice its rated level. The burner assembly (18) is further characterized by a solenoid (82) operated valve (78) arranged to cut off the flow of fuel in housing (32) in response to an electrical control signal and by fuel flow passages (44', 52, 66, 70, 72) positioned as close as possible to the glow plug (87) to promote rapid melting of wax deposits within the flow passages (44', 52, 66, 70, 72).