Control of exhaust energy in internal combustion engines

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11761396
APP PUB NO 20220397073A1
SERIAL NO

17705570

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Abstract

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Methods of improving SCR performance in heavy duty vehicles may use multiple interdependent control techniques to increase engine exhaust temperatures in a fuel efficient manner. One method combines cylinder deactivation and mechanical loading of an engine by an electrical generator used to input energy into an exhaust stream to manipulate the exhaust temperature through the combined effect of modified air-to-fuel ratio and supplemental energy input. In particular, cylinder deactivation may be used to modify the engine air flowrate and the electric generator may be used to apply mechanical load on the engine to manipulate the engine fuel flow rate to control the engine air-to-fuel ratio and thereby increase exhaust temperatures. The exhaust temperatures may be further increased by using the electrical generator to add the energy generated as input energy to the exhaust stream.

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Patent Owner(s)

  • PACCAR INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gerty, Michael Douglas Bellingham, US 7 29
McKinnon, Kimberly Denise Anacortes, US 2 7
Meijer, Maarten Anacortes, US 15 22
Nedelcu, Constantin Emil Bellingham, US 4 8
Swart, Charles Wayne Reinhardt Bellingham, US 33 38
Vadlamani, Uday Burlington, US 16 88
Webb, Cynthia Chaffin Sedro-Woolley, US 35 186

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