Patent Number: 6,254,511

Title: Method and apparatus for adaptively controlling clutches based on engine load

Abstract: A drive line assembly for a work machine is disclosed. The drive line assembly includes an engine driving an engine output shaft and an engine speed sensor which generates engine speed signals indicative of a speed of the engine output shaft. The drive line assembly further includes a fuel injector operable to regulate fuel flow to the engine and a transmission driven by the engine output shaft and having a first on-coming clutch. The drive line assembly yet further includes a controller operable to determine the engine speed from the engine speed signals and determine the fuel flow through the fuel injector. The controller is further operable to determine an engine load based on the fuel flow and a predetermined maximum fuel flow for the engine at the engine speed and control engagement of the first on-coming clutch based on the engine load. A method for controlling a drive line assembly is also disclosed.

Inventors: Esterby; James D. (Peoria, IL), Lorentz; Timothy A. (Morton, IL), Ryan; Jeffrey T. (Washington, IL), Vernagus; Kevin A. (East Peoria, IL)

Assignee: Caterpillar Inc.

International Classification: F16H 61/04 (20060101); F16H 59/14 (20060101); F16H 061/04 (); F16H 061/06 (); F16H 061/08 ()

Expiration Date: 07/03/2018