Advanced Engine Cooling System for a Gas-Engine Vehicle Part I: A New Coolant Flow Control During Cold Start General Motors LLC

Format:

Book

Conference/Event

Author/Creator:

Chang, Insu, author.

Contributor:

Edwards, David

Sun, Min

Conference Name:

WCX SAE World Congress Experience (2024-04-16 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2024

Summary:

In this paper, we present a novel algorithm designed to accurately trigger the engine coolant flow at the optimal moment, thereby safeguarding gas-engines from catastrophic failures such as engine boil. To achieve this objective, we derive models for crucial temperatures within a gas-engine, including the engine combustion wall temperature, engine coolant-out temperature, engine block temperature, and engine oil temperature. To overcome the challenge of measuring hard-to-measure signals such as engine combustion gas temperature, we propose the use of new intermediate parameters. Our approach utilizes a lumped parameter concept with a mean-value approach, enabling precise temperature prediction and rapid simulation. The proposed engine thermal model is capable of estimating temperatures under various conditions, including steady-state or transient engine performance, without the need for extra sensors. Moreover, it exhibits greater robustness compared to temperature estimation systems in gas-engine advanced engine cooling systems. We discuss calibration and verification results to demonstrate the superiority of the proposed engine thermal model and the effectiveness of the coolant flow triggering system

Notes:

Vendor supplied data

Publisher Number:

2024-01-2414

Access Restriction:

Restricted for use by site license