Title: Simulation of coolant temperature in rear-drive layout vehicles under idling conditions

Authors: H. Shimonosono, Y. Hirano, S. Imabeppu, Y. Shibata, S. Hosaka

Addresses: Central Engineering Laboratories, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka-shi, Kanagawa-ken, 237 Japan. ' Central Engineering Laboratories, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka-shi, Kanagawa-ken, 237 Japan. ' Central Engineering Laboratories, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka-shi, Kanagawa-ken, 237 Japan. ' Central Engineering Laboratories, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka-shi, Kanagawa-ken, 237 Japan. ' Central Engineering Laboratories, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka-shi, Kanagawa-ken, 237 Japan

Abstract: Nowadays cooling system specifications are usually determined by transient coolant temperature in idling condition, because of demand-orientation of vehicles and higher air-conditioner performance. However, because transient coolant temperature is influenced by various factors that change with time, it is difficult to predict. Therefore, measures for decreasing the temperature have been developed through a trial and error process. This paper describes a method for simulating transient coolant temperature in the idling condition by setting up a differential equation and examining and quantifying each term in it. This simulation method can reduce the vehicle development period and increase the efficiency of the design process.

Keywords: coolant temperature; heat balance equation; idling conditions; rear-drive vehicles; simulation; differential equations; vehicle development; vehicle design; product development; product design.

DOI: 10.1504/IJVD.1994.061874

International Journal of Vehicle Design, 1994 Vol.15 No.3/4/5, pp.435 - 448

Available online: 28 May 2014 *

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