Gm Global Technolgoy Operations, Inc.

Hamid M Esfahan

John F Van Gilder

Wajdi B Hamama

Eric B Ferch

Craig Michael Sawdon

Wenbo Wang

Michael J Lucido

Daniel P Grenn

Robert J Horner

Anthony E Cubr

Mark D Carr

Jon C Miller

Jian Lin

Michael A Kropinski

Ian J Macewen

James T Kurnik

Ian J Mac Ewen

Trenton W Haines

Onassis Matthews

Weixin Yan

Karl T Kiebel

Marilyn L Kindermann

Brian D Francis

Minghui Kao

Satish Kumar

Shane M Boehner

Gary Ferries

Wen-Chuan Lin

Michael A Steele

A knock diagnostic module having a knock module that increments a sample count when a cylinder firing signal corresponding to a first cylinder is received and selectively increments a knock count based on a knock detection signal that corresponds to the cylinder firing signal of the first cylinder A knock analysis module analyzes the knock count of the first cylinder when the sample count of the first cylinder reaches a predetermined value and selectively generates an excessive knock signal when the knock count exceeds a predetermined threshold. A remedial action module selectively performs a remedial action based on the excessive knock signal.

Engine knock diagnostic

An on-target rapid control prototyping (RCP) system includes a host control module that generates a first RCP model based on selected function blocks in a block library. A target language compiler converts the first RCP model into source code. A cross-compiler coverts the source code into object code. A download module performs an on-target download of the object code from a host that includes the host control module to a production control module of a production system that is separate from the host.

On-target rapid control prototyping

A vehicle simulation system includes a compiler module, a parser module, a wrapper module, a modeling module, and a simulation module. The compiler module generates object code that is compatible with a first type of operating system based on source code that is executable by a vehicle control module and that is compatible with a second type of operating system. The parser module generates a definitions file and an extensible markup language (XML) file based on the source code and the object code. The wrapper module generates a library file based on the object code and the definitions file. The modeling module generates model-based source code for a virtual model based on the XML file and a user configuration of the virtual model. The simulation module simulates operation of a plant of a vehicle with the virtual model.

Vehicle system modeling systems and methods

A method and control module for determining a sensor error includes a time-based diagnostic module generating a time-based diagnostic for a sensor and an event-based diagnostic module generating an event-based diagnostic for the sensor. A synchronizing module synchronizes the time-based diagnostic and the event-based diagnostic to obtain a diagnostic result. A fault indicator module generates a fault signal in response to the diagnostic result.

Control system and method for sensor signal out of range detection

An engine control system includes a driver module and a diagnostics module. The driver module includes a high-side driver and a low-side driver, which selectively actuate a load. The driver module generates status signals based on detection of each of a plurality of failure modes of the high-side and low-side drivers. The diagnostics module increments a first error count for a first mode of the plurality of failure modes when the status signals indicate the driver module has detected the first mode. The diagnostics module increments a corresponding total count each time the driver module analyzes the first mode. The diagnostics module sets a fail state for a diagnostic trouble code (DTC) when the first error count for the first mode reaches a first predetermined threshold prior to the total count reaching a second predetermined threshold.

Diagnostic system for spark ignition direct injection system control circuits

An engine control system includes a digital signal processing (DSP) module that generates a fast Fourier transform (FFT) of an engine knock signal generated by an engine knock sensor. An intensity determination module determines an engine knock intensity based on one of a maximum of and an average of the FFT. A status determination module determines a status of the engine knock sensor based on the engine knock intensity, a plurality of predetermined knock intensity thresholds, and a rotational speed of an engine crankshaft.

Diagnostic systems and methods for engine knock sensors

A knock detection module for an engine comprises a statistics storage module and a processing module. The statistics storage module stores M times N vibration profiles corresponding to M zones of operation of the engine and N cylinders of the engine, wherein M and N are integers greater than one. The processing module determines in which one of the M zones the engine is operating and determines whether knock has occurred for one of the N cylinders by comparing measured vibration data with a selected one of the vibration profiles corresponding to the one of the M zones and the one of the N cylinders.

Knock system with detection zones

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Ann Arbor, MI, United States of America

Hamid M Esfahan