Paul Stauffer

US Patent:

62340026, May 22, 2001

Filed:

Sep 5, 1997

Appl. No.:

8/926333

Inventors:

David W. Sisney - Rockford IL
Paul E. Stauffer - Rockford IL

International Classification:

G01M 1500

US Classification:

73 157

Abstract:

Automated apparatus and method to aid in the servicing of fuel injectors is adapted to be selectively operated in a test mode or a cleaning mode. The test mode senses flow rate through the injector and current draw of the injector solenoid, and provides the operator with visual indication and a printed record of the data. The cleaning mode begins with a testing sequence to record baseline flow and current draw data, cycles through predetermined cleaning steps including flowing a cleaning agent through the injector, checks the flow rate and current draw of the injector during and after the cleaning cycle, and repeats the testing sequence. This testing-cleaning cycle may be repeated until either the injector meets predefined performance criteria or until a pre-selected limit has been reached.