Gm Global Technolgoy Operations, Inc.

Dean R Kwapis

Rafat F Hattar

Michael J Lucido

Qi Ma

Mark D Carr

J Michael Gwidt

Kevin M Luchansky

Michael N Kotsonas

Timothy J Braman

Maher El-Jaroudi

Joseph Duarte

An engine control system includes a fuel system including a first fuel pump in fluid communication with a fuel tank and a second fuel pump in fluid communication with the first fuel pump. A pump control module selectively turns on the first fuel pump when a door opens before an engine is started, the engine is not cranking and a rail pressure of the first fuel pump is less than a predetermined rail pressure.

Fuel pump prime activated by door sensor

A system according to the principles of the present disclosure includes a stochastic pre-ignition module and a fuel control module. The stochastic pre-ignition module determines whether operating conditions of an engine satisfy predetermined criteria associated with stochastic pre-ignition. The fuel control module enriches an air/fuel ratio of the engine when the engine operating conditions satisfy the predetermined criteria.

System and method for preventing stochastic pre-ignition

A control system includes an engine enable module and a fuel control module. The engine enable module determines whether predetermined operating conditions of a spark ignition direct injection (SIDI) engine are satisfied and enables an engine prime mode when the predetermined operating conditions are satisfied. The fuel control module controls a fuel injector to deliver a prime pulse to a cylinder of the SIDI engine when the engine prime mode is enabled. The fuel injector delivers the prime pulse by opening for a pulse width to inject fuel directly into the cylinder when the SIDI engine is stopped.

Control system and method for improving cold startability of spark ignition direct injection (SIDI) engines

A control module and method for controlling an engine operation includes a runtime module that determines a previous run period, a fuel mass module that determines a fuel mass during the previous run period, a spark fouling condition estimation module that determines a spark fouling condition based on the fuel mass during the previous run period and an engine operation module that controls the engine in response to the spark fouling condition.

Method and apparatus for reducing spark plug fouling

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White Lake, MI, United States of America

Dean R Kwapis