Truc Bich Le

US Patent:

20180347530, Dec 6, 2018

Filed:

Jun 1, 2017

Appl. No.:

15/611341

Inventors:

Truc Le - Rochester Hills MI, US
Craig A Summers - Northville MI, US
Simon Wong - Sterling Heights MI, US

International Classification:

F02N 11/08
B60T 17/22

Abstract:

An automatic engine stop-start system of a vehicle having an engine includes a controller in signal communication with the engine and configured to command automatically stopping and starting the vehicle engine, a first sensor in signal communication with the controller and configured to generate a first signal indicative of a grade of a road the vehicle is located on, and a master brake cylinder having a pressure sensor in signal communication with the controller, the pressure sensor configured to generate a pressure signal indicative of a master cylinder brake pressure. The controller is further configured to determine a pressure threshold based on the first signal and the pressure signal. When the pressure signal exceeds the pressure threshold, thereby indicating a driver is releasing a brake pedal of the vehicle, the controller commands automatically restarting the vehicle engine.

US Patent:

20150369141, Dec 24, 2015

Filed:

Jun 18, 2015

Appl. No.:

14/743656

Inventors:

Ihab S. SOLIMAN - Washington MI, US
Mark A. SHOST - Northville MI, US
Truc Trung LE - Rochester Hills MI, US
Joseph B. ADAMS - Northville MI, US

International Classification:

F02D 17/02
F02P 5/15

Abstract:

A variety of methods and arrangements for implementing a start/stop feature in a skip fire engine control system are described. In one aspect, the implementation of the start/stop feature involves automatically turning off an internal combustion engine under selected circumstances during a drive cycle. A determination is made that the engine should be restarted. During the engine startup period, the engine is operated in a skip fire manner such that a desired engine speed is reached.