Brunswick Corporation

Cummins IP, Inc.

Kyle M Miller

Timothy R Frazier

Lisa Farrell

Doyle E Whittington

Andrew H Bazan

William J Samples

Chih-hua Liang

A shift control system for a marine drive applies partial clutch engagement pressure upon initial shifting from forward to reverse to prevent stalling of the engine otherwise caused by applying full clutch engagement pressure upon shifting from forward to reverse.

Marine drive shift control system

An apparatus, system, and method are disclosed for efficiently increasing exhaust flow temperature for an internal combustion engine. The method includes excepting a user input to disable an exhaust valve opening mechanism. The method further includes monitoring exhaust gas mass flows and temperatures, interpreting required exhaust temperatures for aftertreatment devices, and surveying a plurality of operating conditions for a combustion engine. The method includes determining a crankshaft angle for dynamically engaging an exhaust valve open mode based on the exhaust temperature, the required exhaust temperature, and the engine operating conditions. Dynamically engaging the exhaust valve open mode includes selecting a specific crankshaft angle for each combustion cycle of the engine.

Apparatus, system, and method for efficiently increasing exhaust flow temperature for an internal combustion engine

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Charleston, SC, United States of America

Kyle M Miller