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A waste heat utilization system of an engine

An engine and waste heat technology, which is applied in the direction of engine cooling, engine starting, engine components, etc., can solve the problems of complex control, poor practicability, complex structure, etc., and achieve the effects of high waste heat recovery efficiency, convenient control and simple structure

Active Publication Date: 2017-12-26
HUBEI YINGPAI POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the engine waste heat recovery devices in the prior art basically recover a single waste heat, and there are few studies on joint recovery of exhaust gas waste heat and coolant waste heat; at the same time, when recovering engine waste heat, the cooling system and waste heat The method of parallel connection of the recovery system is not only complicated in structure, but also high in cost; moreover, the control is complicated and the practicability is poor

Method used

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  • A waste heat utilization system of an engine
  • A waste heat utilization system of an engine

Examples

Experimental program
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Effect test

Embodiment 1

[0033] see figure 1 , the present invention provides a waste heat utilization device of an engine, comprising an engine 1, a cooling water circulation pipeline 2 is arranged on the engine 1, and a cooling water pump ( figure 1 Not shown in) and cooling water tank 6, the fan 7 that engine 1 carries carries out cooling to cooling water tank 6, finishes the cooling of circulating water. An air filter 4 and a turbocharger 5 are sequentially arranged on the engine intake pipe 3, and then connected to an intercooler or a cooling water tank 6, and enter the engine 1, which is also provided with an engine exhaust pipe.

[0034] The cooling water tank 6 can be set as two separate boxes, one box is connected to the cooling water circulation pipeline 2, and the other box is connected to the engine intake pipe 3, and the fan 7 provided by the engine 1 is used to respectively cool the cooling water and the engine intake. Cool down.

[0035] In order to effectively utilize the waste heat ...

Embodiment 2

[0044] see figure 2 , Embodiment 2, on the basis of Embodiment 1, also includes a second temperature sensor 17, the second temperature sensor 17 is arranged on the cylinder side of the engine 1 body, in order to monitor the temperature of the engine 1, the second temperature sensor 17 and the central The controller 15 is electrically connected.

[0045] When the weather is hot in summer, the heat dissipation effect is poor, which sometimes causes the temperature of the engine to be too high, thereby affecting the use effect of the engine and reducing the service life of the engine. Embodiment 2 can effectively solve the above problems.

[0046] As a preferred solution, when the engine 1 starts, the second temperature sensor 17 monitors the temperature of the engine 1, and when the monitored temperature of the second temperature sensor 17 is higher than 90° C., the second temperature sensor 17 transmits a signal to the central controller 15 , the central controller 15 contro...

Embodiment 3

[0050] On the basis of Embodiment 1, an exhaust fan is arranged in the engine room, and a contactor is arranged on the exhaust fan. When the waste heat utilization system of the engine is in the engine cooling mode, because the engine emits a large amount of heat, in summer, the temperature in the engine room will be too high, which is not conducive to the operation of the machine. At this time, it is necessary to install an exhaust fan in the control room. When the temperature When it is too high, discharge the hot air. The contactor is electrically connected with the central controller 15, and is linked with the fan 7 of the engine 1. The central controller 15 controls the fan 7 and the exhaust fan to be turned on or off simultaneously, or a third temperature sensor is set in the engine room, and the third temperature sensor is connected with the engine room. The central controller 15 is electrically connected to control the switch of the exhaust fan according to the tempera...

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Abstract

The invention provides a waste heat utilization device of an engine. The waste heat utilization device comprises an engine, a cooling water circulating pipeline, an engine gas inlet tube, an engine gas outlet tube, a turbocharger, a cooling water tank and a fan, and further comprises a heat exchanger arranged on the cooling water circulating pipeline and a water-cooling intercooler arranged on the engine gas inlet tube as well as an electromagnetic clutch for controlling the fan to open and close, a first temperature sensor and a central controller, wherein a heat-exchange circulating pipeline is connected with a circulating water tank, a circulating water pump, the heat exchanger, the water-cooling intercooler and a heating terminal, and then returns into the circulating water tank; and a liquid level meter, a water replenishing tube and a water pump are arranged in the circulating water tank. The waste heat utilization device of the engine is simple in structure, is high in waste heat recovery efficiency; and compared with a conventional device in which an engine cooling system and a waste heat utilization system are connected in parallel, the waste heat utilization device has the advantages of a simple structure, low cost and a high waste heat utilization rate, is especially suitable for special requirements of power generators used in armies and armies in cold plateau zone to provide heating to barracks.

Description

technical field [0001] The invention relates to a waste heat utilization system, in particular to a waste heat utilization system of an engine, and belongs to the technical field of heat energy recovery and utilization. Background technique [0002] Relevant studies have shown that when the engine is working, the heat equivalent converted into effective work accounts for 20-45% of the calorific value of fuel combustion, and the energy discharged in the form of waste heat accounts for 55-80% of the total energy of combustion, that is to say, the energy emitted by the engine Only one-third is effectively utilized, and most of the other energy is lost through the cooling water heat dissipation of the engine and the heat exhaustion of high-temperature exhaust gas, resulting in a waste of energy. [0003] In order to effectively utilize the waste heat of the engine, from the 1980s, some large automobile companies in developed countries began to study the recovery and utilization ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02G5/00F01P11/00F01P11/14F01P11/18F01P7/14F02N19/02
CPCF01P7/14F01P11/00F01P11/14F01P11/18F01P2025/13F02G5/00F02N19/02Y02T10/12
Inventor 彭涛徐祥国
Owner HUBEI YINGPAI POWER TECH