Engine Operating Parameter-based Heat Transfer Simulation to Predict Engine Warm-up Graz University of Technology

Format:

Conference/Event

Author/Creator:

Salbrechter, Salbrechter, author.

Contributor:

Krenn, Markus

Nöst, Michael

Pirker, Gerhard

Wimmer, Andreas

Conference Name:

SAE 2014 World Congress & Exhibition (2014-04-08 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2014

Summary:

AbstractOptimization of engine warm-up behavior has traditionally made use of experimental investigations. However, thermal engine models are a more cost-effective alternative and allow evaluation of the fuel saving potential of thermal management measures in different driving cycles. To simulate the thermal behavior of engines in general and engine warm-up in particular, knowledge of heat distribution throughout all engine components is essential. To this end, gas-side heat transfer inside the combustion chamber and in the exhaust port must be modeled as accurately as possible.Up to now, map-based models have been used to simulate heat transfer and fuel consumption; these two values are calculated as a function of engine speed and load. To extend the scope of these models, it is increasingly desirable to calculate gas-side heat transfer and fuel consumption as a function of engine operating parameters in order to evaluate different ECU databases.This paper describes the creation of a parameter-based heat transfer model using a statistical approach. The data for this model is obtained from combustion process calculation using rate of heat release (ROHR) simulation. The procedure is described in detail using the example of a DI gasoline engine. In addition, the basic structure of a thermal engine model is defined

Notes:

Vendor supplied data

Publisher Number:

2014-01-1103

Access Restriction:

Restricted for use by site license