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Data Acquisition and Analysis in a Vehicle with a Commodore PET
(1982)Journal of Physics E: Scientific InstrumentsA fast data acquisition system has been developed to extract cycle-by-cycle information on car engine performance and fuel consumption on the road. The information is stored on cassette for later analysis and digital plotting. A Commodore PET is used for both stages of the process. The paper describes the interface system and both acquisition and analysis methodologies. These are readily adaptable to other applications.Journal Article -
Retrofit Feedback Control of A/F Ratio and Ignition Timing for Fuel Economy
(1982)S.A.E. TransactionsAn electronic engine management system has been developed to control both ignition timing and air-fuel (A/F) ratio to maximize fuel economy. Both controls employ feedback techniques and are therefore intrinsically adaptable to a wide variety of models, as required for a universal retrofit market. The ignition control loop monitors the position of the combustion pressure peak while the mixture control loop senses the lean limit as defined ...Journal Article