Gm Global Technolgoy Operations, Inc.

Federico Luigi Guglielmone

Cristian Taibi

Alberto Lorenzo Vassallo

Luca Giuseppe Pairolero

Paolo Pasero

Alberto Vasallo

Federico Ferrero

Giovanni Avolio

A device is provided for compressor and charge air cooler protection in an internal combustion engine, such as a Diesel engine. The engine having an intake manifold and an exhaust manifold, first and second EGR routes, a charge air cooler, a turbocharger having a compressor and a turbine. A regulator is also provided for regulating the flow rate of exhaust gas and the splitting of exhaust gas between the first and second EGR route. A temperature sensor is also provided for sensing output temperature of gas at the outlet of said compressor. A method and computer readable medium embodying a computer program product are also provided that have a first phase of monitoring a parameter representative of the gas temperature at the output of the compressor and a second phase in which an activity involving engine components operation is performed. The activity is performed using temperature information determined in the monitoring phase.

Device and method for compressor and charge air cooler protection in an internal combustion engine

A Method is provided for estimating a temperature of an exhaust gas in an exhaust line of an internal combustion engine. The exhaust line is provided with a NOsensor that includes, but is not limited to a heater. The method includes, but is not limited to determining a value of a parameter indicative of a heat released by the heater of the NOsensor, and of calculating a value of the temperature of the exhaust gas as a function of the determined value of this parameter.

Method for estimating an exhaust gas temperature

A method is provided for operating a direct injection system of an internal combustion engine of a motor vehicle. The at least one fuel injection parameter is adjusted by a closed loop control of the injected fuel quantity.

Method for operating an injection system of an internal combustion engine

A method is provided for estimating the relative humidity in an intake line of an internal combustion engine provided with an intake manifold connected to the intake line, an exhaust line, and a Low Pressure EGR (LPE) conduit which fluidly connects the exhaust line to a connecting point of said intake line. The method includes, but is not limited to calculating specific humidity in the exhaust line, as a function of the Oconcentration in said exhaust line; determining ambient specific humidity; calculating specific humidity in a portion of the intake line comprised between said connecting point and said intake manifold, as a function of a flow of external air entering into said intake line, a flow of exhaust gases coming from said Low Pressure EGR (LPE) conduit, the specific humidity in said exhaust line and the ambient specific humidity; calculating the relative humidity in said portion of the intake line, as a function of the specific humidity thereof.

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Rivoli, Italy

Federico Luigi Guglielmone