Fuel oil constant temperature device of diesel engine

Abstract

The invention discloses a fuel oil constant temperature device of a diesel engine. The device comprises a controller, a heating heat exchanger, a three-way proportional adjustment valve, a cooling heat exchanger, and an exhaust gas collecting tube. The heating heat exchanger has an oil consumption meter oil supply port which is provided with an inlet oil temperature sensor. The heating heat exchanger has a cooling water out interface which is provided with an electromagnetic valve which is connected to the controller. The heating oil outlet of the heating heat exchanger is communicated with the cooling oil inlet of the cooling heat exchanger and the second inlet of the three-way proportional adjustment valve. The cooling oil outlet is connected to the first inlet of the three-way proportional adjustment valve. The exhaust gas collecting tube has an oil inlet and an oil outlet. The oil inlet of the exhaust gas collecting tube is connected to the outlet of the three-way proportional adjustment valve. The top of the exhaust gas collecting tube is provided with an automatic exhaust valve. The oil outlet of the exhaust gas collecting tube is provided with an out oil temperature sensor. According to the fuel oil constant temperature device, the problem of the difficult air exhaust in the fuel oil constant temperature device is solved.

Description

technical field [0001] The invention relates to the field of engine testing, in particular to a fuel oil constant temperature device for a diesel engine. Background technique [0002] According to the national standard GB1105.3-87 "Internal Combustion Engine Bench Performance Test Method Measurement Technology" and GB / T18297-2001 "Automobile Engine Performance Test Method", during the engine test process, the diesel temperature should be controlled at 311K±5K (38°C ±5°C) to ensure the accuracy of the measurement results of diesel engine performance parameters. [0003] At present, the diesel constant temperature device used in the engine test equipment, the pipeline inside the diesel constant temperature device is up and down. During the test process of the diesel engine, the diesel system will generate gas during operation, and the diesel will be heated and cooled during the process. Gas is also produced. When the gas flows through the diesel constant temperature device, ...

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Problems solved by technology

[0005] The object of the present invention is to provide a fuel oil constant temperature device of a diesel engine with a simple and reasonable structure. The fuel oil constant temperature device of the diesel engine is equipped with an automatic exhaust valve at the highest position of the pipeline to automatically remove the air above the diesel oil and solve the problem of exhausting the air inside the diesel constant temperature device. Difficult problems; moreover, this diesel constant temperature device directly meets the requirements of diesel temperature control by directly adjusting the ratio of high-temperature diesel and low-temperature diesel, and has fast response speed and high control precision.

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