Aaron Michael Harmon

US Patent:

20180058371, Mar 1, 2018

Filed:

Sep 1, 2016

Appl. No.:

15/254704

Inventors:

- Peoria IL, US
Aaron Harmon - Dunlap IL, US
Nikhil Lulla - Peoria IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02F 3/28
F02F 3/22

Abstract:

A piston for an internal combustion engine includes a piston crown having a combustion bowl formed therein, a piston rim extending circumferentially around the combustion bowl and a heat-dissipating chamfer between the combustion bowl and the piston rim. The chamfer is structured by way of at least one of size, angle, or material thickness to an oil gallery to balance heat dissipation with combustion properties. Related methodology is disclosed.

US Patent:

20160084184, Mar 24, 2016

Filed:

Sep 19, 2014

Appl. No.:

14/491028

Inventors:

- Albertville AL, US
Aaron Michael Harmon - Dunlap IL, US

Assignee:

PROGRESS RAIL SERVICES CORPORATION - Albertville AL

International Classification:

F02D 41/14
F02D 41/00

Abstract:

An exhaust system for an engine is provided that may have an exhaust passage configured to direct exhaust from the engine to the atmosphere. The exhaust system may also have an aftertreatment component disposed within the exhaust passage, a throttle configured to generate a throttle position signal indicative of a throttle position of the engine, and a temperature sensor configured to generate a temperature signal indicative of the exhaust temperature. The exhaust system may also have a controller in communication with the engine, the throttle, the sensor, and the aftertreatment component, configured to monitor the temperature signal and track a total duration for which the temperature signal is less than a threshold temperature. The controller may also be configured to initiate a load increase on the engine to raise a temperature of exhaust exiting the engine when the total duration is greater than a threshold duration. The threshold temperature and the threshold duration vary during operation of the engine, and are determined by the controller based on one or more inputs including at least the throttle position.