Engine heat energy management system and its management method
A management system and management method technology, applied in the engine thermal management system and its management field, can solve problems such as poor exhaust, slow increase of water temperature and oil temperature, and difficulty in air intake, so as to reduce fuel costs, avoid heat waste, Reduce the effect of heat dissipation
Active Publication Date: 2020-12-25
WEICHAI HEAVY MACHINERY CO LTD
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Problems solved by technology
At the same time, in order to avoid fuel solidification and wax formation, which will cause the engine to fail to start and operate normally, users usually need to choose higher-priced low-condensation point (ie high-grade) diesel as the fuel for the engine, because the price of high-grade diesel is higher than that of low-grade diesel The price of diesel oil, thus greatly increasing the user's operating costs
[0003] In addition, some of the high-temperature exhaust gas generated during the operation of the existing engine is directly discharged through the exhaust pipe, and the engine cannot be well dissipated and cooled; at the same time, the heat of the high-temperature exhaust gas cannot be fully utilized, resulting in waste of heat energy
Although some use the exhaust waste heat to heat the fuel, directly using the exhaust to heat will inevitably increase the exhaust back pressure, resulting in poor exhaust and difficulty in intake, which will affect the normal operation of the engine; moreover, due to the high exhaust temperature , the use of exhaust gas heating is prone to danger and potential safety hazards; because the existing engine does not consider the increase speed of water temperature and oil temperature, it is easy to cause the water temperature and oil temperature to increase slowly, or both of them cannot be raised to the optimal temperature. , affecting the normal operation of the engine
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[0034] The present invention will be described in further detail without limitation in conjunction with the accompanying drawings and examples below.
[0035] In the description of the present invention, it should be noted that the terms "one", "two", "three" and other numerals are only for the purpose of description, and should not be understood as indicating or implying relative importance. The terms "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection or a hydraulic connection, it can be a direct connection between elements, or an indirect connection through an intermediary, for those skilled in the art The specific meanings of the above terms can be understood according to specific situations.
[0036] Such as figure 1 As shown, the engine heat management system of the present invention includes: an exhaust pipe water jacket 2 arranged outside the exhaust pipe 11 of the engine 1, a ...
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The invention discloses an engine heat energy management system and a management method for the engine heat energy management system. The heat energy management system comprises an air exhaust pipe water sleeve, a fuel oil supplying pipeline and a cooling water circulation pipeline, wherein the air exhaust pipe water sleeve is arranged outside an engine air exhaust pipe, and the fuel oil supplyingpipeline and the cooling water circulation pipeline are controlled by a control unit; the fuel oil supplying pipeline comprises a main oil box, a secondary oil box, an oil path electrohydraulic directional valve and an oil supplying pump, and the main oil box is provided with a water heater and an oil temperature sensor; and the cooling water circulation pipeline comprises a thermostat, three water path electrohydraulic directional valves, a circulation water pump, a water temperature sensor and a heat exchanger. The management method comprises water path control and oil path control. According to the engine heat energy management system and the management method for the engine heat energy management system, air exhaust pipe air-exhausting is sufficiently utilized to heat cooling water, the cooling water is utilized to heat fuel oil, the thermostat, all the electrohydraulic directional valves and the pumps are coordinated to work through the control unit, and the water temperature andthe fuel oil temperature are made to rise to the best working range as soon as possible; meanwhile, engine heat dissipation is reduced, and the heat energy conversion efficiency is improved; and by means of switching between the high and low mark fuel oil inside the main oil box and the secondary oil box, the fuel oil cost is effectively lowered.
Description
technical field [0001] The invention relates to the technical field of engines, in particular to an engine thermal energy management system and a management method thereof. Background technique [0002] In cold conditions, engine operation needs to increase the water temperature and fuel temperature to the optimum temperature range as soon as possible, so that the engine can quickly reach the optimum working condition. At the same time, in order to avoid fuel solidification and wax formation, which will cause the engine to fail to start and operate normally, users usually need to choose higher-priced low-condensation point (ie high-grade) diesel as the fuel for the engine, because the price of high-grade diesel is higher than that of low-grade diesel The price of diesel oil has greatly increased the user's operating costs. [0003] In addition, some of the high-temperature exhaust gas produced during the operation of the existing engine is directly discharged through the ex...
Claims
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IPC IPC(8): F02N19/10F02M31/16F01N5/02F01P7/16
CPCF01N5/02F01P7/165F02M31/16F02N19/10Y02T10/12
Inventor 陈有兵孟庆健尹晓青靳良真
Owner WEICHAI HEAVY MACHINERY CO LTD