Method of locating a partially plugged port fuel injector using misfire monitor

Patent · Tue Jun 27 00:00:00 EDT 1989

OSTI ID:5615014

Blanke, J D

This patent describes the method of locating a partially plugged port fuel injector in an internal combustion engine comprising using a misfire monitor to determine that the lean-roll frequency has decreased or ceased after the cylinder associated with the partially plugged port fuel injector is disabled.

• Assignee: NOV; NOV-89-074143; EDB-89-144021
• Patent Number(s): US 4841765
• OSTI ID: 5615014
• Resource Relation: Patent File Date: 21 Jan 1988
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL INJECTION SYSTEMS
MONITORS
FAILURES
FOULING
INTERNAL COMBUSTION ENGINES
MONITORING
ENGINES
FUEL SYSTEMS
HEAT ENGINES
MEASURING INSTRUMENTS
330100* - Internal Combustion Engines