System for estimating engine exhaust temperature

US6508242B2 · kind B2 · utility

Assignee

• Cummins Inc. · US

Inventors

• Salim A. Jaliwala · Peoria, US
• Paul R. Miller · Columbus, US
• Larry J. Brackney · Columbus, US
• Thomas A. Dollmeyer · Columbus, US
• John F. Wright · Columbus, US
• Gary L. Hunter · Dexter, US

Key dates

• Filing date: Jan 31, 2001
• Grant date: Jan 21, 2003
• Expiry date: Apr 7, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A system is provided for estimating engine exhaust temperature in accordance with an exhaust temperature model based on a number of engine operating parameters. In one embodiment, the engine exhaust temperature model is based on current values of engine speed, intake manifold temperature, mass charge flow, default fuel command parameters, and a first set of model constants. In an alternative embodiment, the engine exhaust temperature model is based on current values of engine speed, intake manifold temperature, intake manifold pressure, mass charge flow, default fueling parameters, and a second set of model constants including a lower heating value of fuel constant.