CA2239912A1 - Digital engine analyzer - Google Patents
Digital engine analyzerInfo
- Publication number
- CA2239912A1 CA2239912A1 CA 2239912 CA2239912A CA2239912A1 CA 2239912 A1 CA2239912 A1 CA 2239912A1 CA 2239912 CA2239912 CA 2239912 CA 2239912 A CA2239912 A CA 2239912A CA 2239912 A1 CA2239912 A1 CA 2239912A1
- Authority
- CA
- Canada
- Prior art keywords
- engine
- analyzer
- keyboard
- display
- analog input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
A digital engine analyzer has an oscilloscope display and is controlled by microprocessors operating under menu-driven stored program control. The analyzer receives analog input signals from an engine being analyzed, engine identification and parameter data entered via a keyboard, function and mode data selected by keyboard, and data communicated from an engine on-board computer via a hand-held scanner device. The analyzer calculates and displays spark plug burn time information derived from a single analog input signal, a historical display of peak ignition voltage values for a selected cylinder over a number of engine cycles and real time cylinder time balance information. Peak capture circuitry permit the display of a full cylinder period of a waveform, even though it contains very high frequency portions, by selectively switching between normal and high resolution modes. The scanner interface permits the scanner control functions to be effected from the analyzer keyboard.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US587,357 | 1990-09-24 | ||
US07/587,357 US5250935A (en) | 1990-09-24 | 1990-09-24 | Waveform peak capture circuit for digital engine analyzer |
CA002048299A CA2048299C (en) | 1990-09-24 | 1991-08-01 | Digital engine analyzer |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002048299A Division CA2048299C (en) | 1990-09-24 | 1991-08-01 | Digital engine analyzer |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2239912A1 true CA2239912A1 (en) | 1992-03-25 |
CA2239912C CA2239912C (en) | 2000-02-15 |
Family
ID=25674715
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002239915A Expired - Fee Related CA2239915C (en) | 1990-09-24 | 1991-08-01 | Digital engine analyzer |
CA002239912A Expired - Fee Related CA2239912C (en) | 1990-09-24 | 1991-08-01 | Digital engine analyzer |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002239915A Expired - Fee Related CA2239915C (en) | 1990-09-24 | 1991-08-01 | Digital engine analyzer |
Country Status (1)
Country | Link |
---|---|
CA (2) | CA2239915C (en) |
-
1991
- 1991-08-01 CA CA002239915A patent/CA2239915C/en not_active Expired - Fee Related
- 1991-08-01 CA CA002239912A patent/CA2239912C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2239912C (en) | 2000-02-15 |
CA2239915A1 (en) | 1992-03-25 |
CA2239915C (en) | 2000-04-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |