RU2186227C2 - Heat machine liquid cooling system - Google Patents

Abstract

FIELD: mechanical engineering; higher powered internal combustion engines. SUBSTANCE: invention relates to liquid cooling systems of heat machines. In proposed liquid cooling system of heat machine including communicating cooling spaces of cylinders, intake and exhaust manifolds connected, respectively, to upper and lower parts of cooling space and made in form of constant section pipes, each constant section part of each manifold is coupled with cooling spaces of one of cylinders, and separate throttling mushroom-shaped devices is installed in intake manifold opposite to each cylinder. Distance between mushroom head and cylinder block wall depends on machine modification level being a preset value. EFFECT: improved efficiency of water distribution among sections of cylinder block under higher power conditions of heat machine. 2 dwg

Description

 The invention relates to the field of mechanical engineering, and in particular to liquid cooling systems of heat engines of mainly highly accelerated internal combustion engines (ICE).

 A known liquid cooling system of a heat engine [1]. At the same time, there are individual systems for supplying coolant to each cylinder, allowing its flow rate to be regulated. The design is such that the regulation of high-powered ICE in operating conditions is impossible. In this regard, it becomes necessary to lay in the heat engine such a distribution of coolant flows that all cylinders, regardless of their location, are washed approximately the same and the conditions of heat transfer to the cooling medium are identical.

 A known liquid cooling system of a heat engine [2]. The system comprises interconnected cooling cavities of the cylinders, the supply and exhaust manifolds connected respectively to the lower and upper parts of the cooling cavities, a circulation pump connected to the supply manifold, and a cooler connected to the exhaust manifold. In the device, the outlet and supply manifolds are made in the form of piecewise constant section pipes, the first of which is made with a section increasing towards the cooler, and the second with a section increasing towards the pump, and each section of a constant section of each collector is connected with cooling cavities of one from cylinders.

 The specified device is a prototype of the claimed.

 A disadvantage of the known liquid cooling systems of a heat engine is the low efficiency of water distribution over sections of the cylinder block under conditions of high forces, due to the constant casting of piecewise constant sections for each level of forcing (for each level of forcing of the heat engine, it is necessary to change the overall dimensions of the piecewise constant system, which is irrational) .

 The present invention solves the problem of increasing the efficiency of water distribution conditions in sections of the cylinder block under conditions of high boosts of the heat engine.

 To obtain such a technical result in the proposed liquid cooling system of a heat engine, comprising interconnected cooling cavities of the cylinders, inlet and outlet manifolds, connected respectively to the upper and lower parts of the cooling cavity and made in the form of pipes of constant cross section, each constant section of each collector is connected with cooling cavities of one of the cylinders, a circulation pump connected to the intake manifold, and a cooler connected to the outlet manifold torus, in the supply manifold mounted in front of each individual cylinder throttling device in the form of the fungus clearly known distance from the mold wall to block depending on the level of boost heat engine.

 Distinctive features of the proposed technical solution is that in the intake manifold opposite each cylinder an individual throttling device is installed in the form of a fungus with a known distance from the fungus to the block-crankcase wall, depending on the level of boost of the heat engine.

 In FIG. 1 is a diagram of a liquid cooling system of a heat engine.

 The cooling system contains cavities 1 for cooling the cylinders of the machine, interconnected by holes (not shown) in the separation walls 2, inlet and outlet manifolds 3 and 4, made in the form of pipes of constant cross section and connected: the first to the discharge pipe of the circulation pump 5 and lower part of the cooling cavities, and the second to the cooler 6 and the upper part of the cooling cavities. The outlet manifold 4 is additionally connected to the expansion tank 7, to the lower part of which is connected the suction pipe of the circulation pump 5. Sections of a constant section of each collector are connected to the cooling cavities of one of the cylinders. An individual throttling device in the form of a fungus 8 with a known distance A from the fungus to the block wall, depending on the level of forcing of the heat engine, is installed in the intake manifold 3 opposite each cylinder.

 The cooling system operates as follows.

 The circulation pump 5 delivers fluid to the intake manifold 3, from which it enters the cylinder cooling cavity 1 and then through the exhaust manifold 4 to the cooler 6. The vapor from the exhaust manifold is discharged into the expansion tank 7. The collectors 3 and 4 are made in the form of constant section pipes and the installation in the intake manifold 3 opposite each cylinder of individual throttling devices in the form of fungi 8 with a known distance A from the fungus to the block wall allows to increase the efficiency of water distribution conditions I am on sections of the cylinder block in conditions of high boosts of the heat engine.

 In FIG. 2 shows a diagram of the installation of fungi in the flow collector of a heat engine.

In FIG. 3 shows the achievement of a positive effect on the heat engine - diesel 6 CHN 21/21 manufactured by JSC "VDM" them. Mom’s using the existing liquid cooling system (graph 1) and with the proposed technical solution (graph 2). A comparison of these graphs shows that when applying the proposed technical solution by installing fungi, the efficiency of water distribution conditions in sections of the cylinder block increases by equalizing the temperature of the coolant at the outlet of the sections T _cool .

 Thus, the cooling system provides high cooling efficiency and can be used in cooling systems of highly accelerated internal combustion engines.

Sources of information
1. R.M. Petrichenko. Liquid cooling systems for high-speed internal combustion engines. L., Engineering, 1975, p. 60.

 2. Auth. testimonial. SU 1677354, m.cl. 4 F 01 P 3/20, 3/02, prototype.

Claims (1)

 The liquid cooling system of the heat engine, containing the cooling cavities of the cylinders interconnected, the supply and exhaust manifolds, connected respectively to the upper and lower parts of the cooling cavities and made in the form of pipes of constant cross section, with each section of each collector connected to the cooling cavities of one of the cylinders, circulating a pump connected to the intake manifold, and a cooler connected to the exhaust manifold, characterized in that in the intake manifold opposite each cylinder the core set an individual throttling device in the form of a fungus with a known distance from the fungus to the wall of the crankcase, depending on the level of forcing of the heat engine.

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