Automotive engine analyzer for engine test leads

Details Automotive engine analyzer for engine test leads Automotive engine analyzer for engine test leads

F - Mech Eng,Light,Heat,Weapons

02

P

354/24

F02P 17/08 (2006.01) G01R 31/02 (2006.01)

Patent

CA 1157561

ABSTRAGT A voltage divider network compri5ing three series connected resis- tors, serves to reference a test signal lead connectable to an internal com- bustion engine, with respect to ground, for providing a voltage test signal on an output conductor representative of test data to be retrieved from the e~gine. Whenever the test signal lead is disconnected from the engineJ the voltage divider network provides a non-zero voltage level on the output conductor, having a magnitude lying wlthout a predetermined voltage range of possible test signals. A signal processing circuitry analyzes the test signals for providing a visual analysis display for the operator of the analyzer, and fur- ther is responsive to the aforesaid non-~ero voltage level for blanking the por- t.ion of the visual display which is reserved for displaying analysis data.

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