Engine dual-cycle forced cooling system

A technology of forced cooling and external circulation cooling, which is used in the cooling of engines, engine components, machines/engines, etc., can solve the problems of aggravating friction pair wear, heavy friction pair wear, and high viscosity of lubricating oil, and achieves reduction of process resistance, The effect of reducing power consumption and increasing temperature

Inactive Publication Date: 2007-01-10
WEICHAI POWER CO LTD
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  • Abstract
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Problems solved by technology

When the engine is running at low temperature, the fuel atomization is poor at low temperature, and the viscosity of the lubricating oil is high at low temperature, and the wear of the friction pair is heavy, which aggravates the wear of the friction pair and reduces the power performance and economic indicators of the engine.

Method used

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  • Engine dual-cycle forced cooling system

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Embodiment Construction

[0014] As shown in Figure 1, the dual-circulation forced cooling system of the engine includes an inner circulation cooling subsystem and an outer circulation cooling subsystem, and the outer circulation cooling subsystem is connected to the outer circulation water chamber 9 of the heat exchanger, and the inner circulation The cooling subsystem pipe is connected to the internal circulation water cavity 8 of the heat exchanger, and the pipeline of the external circulation cooling subsystem is also provided with a flow control valve 4 capable of controlling the flow of the external circulation cooling medium through the heat exchanger. A temperature sensing device of the water chamber, the temperature sensing device drives the flow control valve 4 .

[0015] The flow control valve is arranged at the water inlet 91 of the outer circulating water chamber 9 of the heat exchanger, and the temperature sensing device is arranged in the inner circulating water chamber 8 of the heat exch...

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Abstract

The invention discloses an engine double circulation forced cooling system, comprising internal circulation cooling subsystem and external circulation cooling subsystem, where the pipeline of the external circulation cooling subsystem connects to the external circulation water cavity of a heat exchanger and that of the internal circulation cooling subsystem connects to the internal circulation water cavity of the heat exchanger, the pipeline of the external circulation cooling subsystem is equipped with a flow control valve able to control the flow of external circulation cooling medium passing through the heat exchange, and a temperature sensing device sampling from the internal circulation water cavity, and the temperature sensing device drives the flow control valve; when a machine is in the 'warming-up' course, the temperature sensing device controls the flow control valve to control the quantity of external circulation cooling medium entering the heat exchanger so as to achieve the purposes of fully using heat energy, shortening warming-up time, and reducing heat energy losses.

Description

technical field [0001] The invention relates to a cooling system for an engine. Background technique [0002] Foreign advanced engines generally adopt a complex three-stage cooling system. The first-stage circulation (high-temperature internal circulation) is used to cool the body and cylinder head. There is a thermostat inside to control the temperature of the cooling medium of the first-stage circulation. The secondary circulation (low-temperature internal circulation) is used to cool the intercooler, the oil cooler, and the cooling medium of the primary circulation through the heat exchanger. There is a thermostat inside to control the temperature of the cooling medium of the secondary circulation . The tertiary circulation (outer circulation) cools the cooling medium of the secondary circulation through a heat exchanger. The structure of the system is characterized by less heat loss and less corroded parts. The disadvantage is that there are too many parts, complicated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P3/20F01P7/16
Inventor 胡中伟
Owner WEICHAI POWER CO LTD
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