Gasoline engine cooling system

A cooling system, gasoline engine technology, applied in the direction of engine cooling, liquid cooling, coolant flow control, etc., can solve the problem of engine emissions and fuel economy deterioration, reduced cooling system cooling performance, engine outlet water temperature response lag, etc. problems, to achieve the effect of reducing fuel consumption and emissions, improving cooling performance, and reducing the frequency of opening

CN102705055AActive Publication Date: 2012-10-03ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2012-10-03

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Abstract

The invention discloses a gasoline engine cooling system, which comprises a radiator, a cylinder cover water jacket, a cylinder body water jacket, a water pump, an expansion tank and a thermoregulator valve seat, wherein a thermoregulator is arranged in the thermoregulator valve seat; the thermoregulator valve seat is provided with five inlets and one outlet F; the first inlet A is communicated with a lower water chamber of the radiator; the second inlet B is communicated with the outlet of a fan heater; the third inlet C is communicated with the outlet of an air damper; the fourth inlet D is communicated with the outlet of a distributive pipe via a small circulation circuit; the fifth inlet E is communicated with the expansion tank via a water replenishing circuit; the outlet F is communicated with the water inlet of the water pump; the thermoregulator is a double-valve wax type thermoregulator and comprises a main valve and an auxiliary valve, wherein the main valve is installed on the first inlet A of the thermoregulator valve seat; and the auxiliary valve is just against the fourth inlet D of the thermoregulator valve seat. According to the gasoline engine cooling system disclosed by the invention, gas in cooling liquid can be removed to protect the water pump from cavitation, the cooling performance of the cooling system is improved, an engine is prevented from overheating, and thermal shock is prevented from generating in the cooling system.
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Description

technical field

[0001] The invention relates to an engine cooling system, in particular to a closed forced water cooling gasoline engine cooling system. Background technique

[0002] In the existing gasoline engine cooling system, the coolant is generally directly pumped into the cylinder body through the water pump, enters the cylinder head from the water hole of the cylinder gasket, and then comes out from the cylinder head, and after being cooled by the radiator, it is cooled by the water pump through the water inlet. The controller returns to the water pump to form a large cycle, or directly returns to the water pump through the heater and throttle to form a small cycle; the thermostat is a single-valve wax type thermostat, which is usually arranged at the water inlet of the water pump. The specific principle is as follows: Figure 4 shown. However, in such a cooling system, when the cylinder block and the cylinder head are cooled, part of the cooling water is evaporated...

Examples

Embodiment

[0018] see figure 1 , a gasoline engine cooling system includes a radiator 1, a cylinder head water jacket 2, a cylinder block water jacket 3, a water pump 4 and an expansion tank 10. The upper water chamber of the radiator 1 is connected to the water inlet of the expansion tank 10, and the water outlet of the cylinder head water jacket 2 is respectively connected to the upper water chamber of the radiator 1 and the water inlet of the water distribution pipe 9 through a three-way pipe. The second outlet and the first outlet of the valve are respectively connected to the inlet of the throttle valve 7 and the inlet of the heater 8; the water outlet of the cylinder block water jacket 3 is connected to the water inlet of the cylinder head water jacket 2; the water outlet of the water pump 4 is connected to the cylinder The water inlet of body water jacket 3. see image 3 , a thermostat 6 is installed inside the thermostat valve seat 5, and there are five inlets and one outlet F...