Snap-on Technologies, Inc.

Mark A Hoferitza

Michael D Schoenbeck

Thomas P Becker

Matthew M Crass

An engine analyzing system includes an engine analyzer unit having a CRT display screen for displaying display data based on parameter data received from an associated engine. The system also includes a remote portable display unit with a second CRT display screen and a display control keypad. Each of the analyzer unit and the remote display unit has a wireless transmitter and a wireless receiver. The data displayed on the analyzer display screen is transmitted to the remote unit for display on its screen. By use of the keypad display control signals are transmitted from the remote unit to the analyzer unit for controlling the analyzer unit display and, thereby, the remote unit display.

Remote portable display unit and engine analyzing system incorporating same

Remote portable display unit with wireless transceiver and engine

A diesel timing light includes a flash circuit for flashing a xenon lamp in response to ignition events sensed by a knock sensor. A trigger circuit enables the flash circuit only in the presence of an enable signal, which is generated by a sensing circuit immediately before the ignition of the no. 1 cylinder. The sensing circuit includes a visible laser source which illuminates a patch of reflective tape on the engine flywheel just ahead of a timing mark corresponding to engine top dead center. The tape reflects the visible laser light to a sensor which generates the enable signal. The trigger disables the flash circuit immediately after the flash triggered by the first ignition event after the enable signal. LED indicators indicate when the photosensor is detecting the reflected beam and when the knock sensor is detecting ignition events.

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Kenosha, WI, United States of America

Mark A Hoferitza