Kevin Thomas Mckay, 7023681 26 Mile Rd, Ray Township, MI 48096

2015025, Sep 10, 2015

Mar 5, 2014

14/197931

- Detroit MI, US
Kevin J. McKay - New Hudson MI, US
Lorenzo Pataccia - Moncalieri, IT

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

F02B 37/24
G05B 13/02

A method of adapting operation of a variable geometry turbocharger having a variable position vane mechanism with movable vanes is disclosed. The method includes performing at time T a vane sweep between open-limit and closed-limit positions to identify an initial range of movement of the mechanism and storing in controller's memory the initial range of movement. The method additionally includes performing at time T a vane sweep between the open-limit and closed-limit positions to identify a current range of movement of the mechanism and storing in controller's memory the current range of movement. The method also includes comparing the current range with the initial range. Furthermore, the method includes replacing in controller's memory the initial range with the current range if the current range is equal to or greater than a predetermined range to thereby adapt the operation of the turbocharger to the mechanism's wear between T and T

2015019, Jul 16, 2015

Jan 13, 2014

14/153401

- Detroit MI, US
Kevin J. McKay - New Hudson MI, US
Yun Xiao - Ann Arbor MI, US
Steve L. Melby - Howell MI, US

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

F02D 41/00

A system and method of operating an exhaust gas recirculation (EGR) system of a vehicle includes controlling an EGR valve actuable between an EGR enabled position and an EGR disabled position, such that with the EGR valve in the EGR enabled position a portion of exhaust gas emitted from an engine is directed through an EGR cooler for recirculation into the engine, and with the EGR valve in the EGR disabled position the exhaust gas is not recirculated through the engine. An EGR coolant temperature is predicted based on measured engine speed, vehicle speed, outside ambient temperature, and commanded fuel level of the vehicle. The EGR valve is actuated to the EGR disabled position when the predicted EGR coolant temperature is equal or greater than an EGR coolant temperature threshold. The EGR coolant temperature is predicted without direct measurement of engine coolant temperature.

2015009, Apr 2, 2015

Oct 1, 2013

14/043274

- Detroit MI, US
Kevin J. McKay - New Hudson MI, US

GM Global Technology Operations LLC - Detroit MI

F02D 28/00

701103

A cold start emissions reduction diagnostic system for an internal combustion engine includes a coolant temperature module including a coolant temperature input, and a memory module having a coolant temperature look-up table. The cold start controller also includes a cold start emissions reduction module configured to selectively compare coolant temperature values with desired emission values in the look-up table to determine at least one of a fuel injection timing and a fuel injection quantity to establish a desired cold start emissions profile. A fuel injection monitoring module is configured and disposed to sense changes in fuel injection timing and fuel injection quantity, and an emission reduction diagnostic model module is configured and disposed to determine emission parameters based on the changes in the one of the fuel injection timing and fuel injection quantity sensed by the fuel injection monitoring module during a cold start.