Volvo Truck Corporation

Volvo Lastvagnar Ab

Mack Trucks, Inc.

Adam Myers

John Gibble

Jan Wiman

Russell King

Georgios Angelidis

A method is provided for measuring exhaust gas recirculation (EGR) flow in. an engine system wherein turbo speed of a turbocharger, inlet pressure upstream of a compressor, boost pressure upstream of an engine, and engine intake temperature upstream of the engine are measured. Air mass flow into the engine system is calculated as a function of the turbo speed, inlet pressure, and boost pressure, exhaust mass flow is calculated as a function of the boost pressure, the engine intake temperature, volumetric efficiency of the engine, and engine size, and EGR flow is determined, by subtracting air mass flow from exhaust mass flow. A method for controlling emissions from an engine system, and an. engine system are also provided.

Method for measuring exhaust gas recirculation flow in an engine system, controlling emissions in an engine system, and an engine system

A turbocharger includes a turbine comprising a scroll passage including at least first and second portions, a gas outlet extending axially from the scroll passage, a turbine wheel including one or more blades disposed in the gas outlet, and structure for establishing a bypass flow between the first and second portions of the scroll passage or for altering gas flow through the turbine. A method for adjusting exhaust gas temperature is also provided.

Method for adjusting exhaust gas temperature and turbine with bypass arrangement

Growing community of inventors

Hagerstown, MD, United States of America

Adam Myers