Mahle International Gmbh

Fca US LLC

Dung Kieu Lam

Paul A Kilmurray

Jacob Andrew Kohn

Nicholas Sup

Issac R Nielsen

David B Porter

Techniques for measuring cylinder pressure include receiving an analog cylinder pressure signal indicative of pressure in a cylinder of an engine and an angular position signal indicative of an angular position of the engine. The analog cylinder pressure signal is converted to a digital cylinder pressure signal by (i) windowing the analog cylinder pressure signal in the angle-domain using the angular position signal and (ii) sampling the windowed analog cylinder pressure signal in the time-domain, and the digital cylinder pressure signal is filtered in the time-domain to obtain a filtered digital cylinder pressure signal. A measured pressure in the angle domain is obtained by sampling the filtered digital cylinder pressure signal using the angular position signal, and operation of the engine is controlled using the measured cylinder pressure.

Systems and methods for real-time angle-domain measurement of filtered cylinder pressure

A system comprises an electronic device including at least one input for receiving at least one enable signal and external data. The system also comprises a wake-up circuit including at least one input for receiving at least one informational signal, an output for sending the at least one enable signal to the electronic device, and a data interface for external configuration of the wake-up circuit. If the at least one informational signal satisfies predefined criteria, the wake-up circuit enables the electronic device by way of the at least one enable signal before the external data is received by the electronic device.

Diagnostic system having a wake-up circuit

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Royal Oak, MI, United States of America

Dung Kieu Lam