Engine experiment table temperature control system

By integrating the temperature control system and utilizing exhaust waste heat, the problems of redundant equipment and high energy consumption in the engine test bench have been solved, achieving efficient, compact, and low-cost temperature control, improving temperature control accuracy and energy efficiency, and ensuring the accuracy and repeatability of experimental data.

CN122363401APending Publication Date: 2026-07-10TIANJIN UNIV +1
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Patent Information

Application Number
CN202610478051.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-13
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The existing temperature control system for engine test benches suffers from problems such as equipment redundancy, high energy consumption, large footprint, insufficient temperature control accuracy, and insufficient utilization of waste heat. In particular, the waste heat of exhaust gas is not fully utilized during the start-up phase, resulting in poor economy and energy efficiency in laboratory settings.

Method used

An integrated temperature control system is adopted, which integrates the cooling branches of coolant, engine oil, dynamometer and intercooler. It achieves synchronous temperature control of dual media by using exhaust gas waste heat heating as the main method and electric heating as the auxiliary method, combined with the control strategy of variable frequency pump and PID regulating valve. It also adopts an indirect cascade waste heat recovery mode to reduce system complexity and energy consumption.

Benefits of technology

It achieves efficient, compact, and low-cost temperature control for engine test benches, improves temperature control accuracy and energy efficiency, reduces equipment redundancy and maintenance costs, and enhances the accuracy and repeatability of experimental data.

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Abstract

The invention discloses an engine experiment table temperature control system which comprises a main circulating water pipeline, a cooling liquid cooling branch, an engine oil cooling branch, a dynamometer auxiliary cooling branch and an intercooler auxiliary cooling branch, the cooling liquid cooling branch and the engine oil cooling branch are respectively connected to the preheating unit through a three-way valve; the preheating unit comprises a cooling liquid preheater and an engine oil preheater which are arranged in parallel, and the cooling liquid preheater and the engine oil preheater are supplied with heat by a shared heating water tank; and an electric heater is arranged in the heating water tank and is connected with the tail gas heat exchanger, and the heating water tank is respectively connected with the cooling liquid preheater and the engine oil preheater through an electric three-way proportional diverter valve. All cooling functions can be integrated, the structure is simplified, the cost is reduced, tail gas waste heat of the engine under all working conditions can be efficiently utilized, tail gas heating is mainly used, electric heating is used as an auxiliary, and the actual requirement of engine performance testing in a laboratory scene is met.
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