Gm Global Technolgoy Operations, Inc.

Fabrizio Ramolivo

Francesco Castorina

Giovanni Montinaro

Serena Tordin

Giacomo Latrofa

Luisa Cusanno

Matteo Venturini

Barbara Maisola

A system according to the present disclosure includes a coolant flow request module and a pump control module. The coolant flow request module is configured to determine a coolant flow request based on at least one of (i) an outlet temperature of a compressor disposed upstream of a heat exchanger of a charge air cooler, and (ii) an efficiency of a radiator of the charge air cooler. The pump control module is configured to control an output of a pump based on the coolant flow request. The pump circulates coolant through the radiator of the charge air cooler and through the heat exchanger of the charge air cooler when the pump is activated. The heat exchanger is disposed upstream of an intake manifold of an engine.

System and method for regulating coolant flow through a charge air cooler of a vehicle

A method and apparatus are disclosed for controlling the operation of an aftertreatment system for a motor vehicle having a Lean NOTrap and a tail pipe for conveying exhaust gasses from the LNT to the external environment. Values are calculated for a NOcontent in the exhaust gasses flowing in the tail pipe and the quantity of NOstored in the LNT. A DeNOrequest index is calculated as a function of these values. A raw threshold value of the DeNOrequest index is calculated as a function of a LNT temperature and of an exhaust gas mass flow. A corrected threshold value of the DeNOrequest index is calculated as a function of the raw threshold value of the DeNOrequest index and of a correction factor. A DeNOregeneration is initiated when the calculated value of the DeNOrequest index is larger than the corrected threshold value.

Method of controlling the operation of an aftertreatment system of a motor vehicle

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Canale, Italy

Fabrizio Ramolivo