Cooling water pump for internal combustion engine and production process of cooling water pump

Abstract

The invention discloses a cooling water pump for an internal combustion engine, which comprises a water pump housing, a rotating shaft, a cover plate and an impeller. The water pump housing is formed with a cavity, the rotating shaft is installed in the middle of the cavity through a bearing, and the impeller is installed on the rotating shaft so as to be rotatable along its own axis. , the cover plate is firmly connected to the side of the water pump housing that is formed with a cavity; the water pump housing is provided with a water inlet and a water outlet, and a partition tongue is made in the cavity near the water outlet, and a vortex chamber is made between the partition tongue and the water outlet The flow channel and the vortex flow channel are arc-shaped; the impeller includes a hub, a disc and blades, the center of the hub and the disc is fixed, and the blades are arc-shaped, and the blades are at least two and are evenly spaced around the hub. On the disc, the disc is provided with at least two openings, and the openings are arranged between the blades; the cooling water pump for internal combustion engine of the present invention reduces the volume and quality of the impeller by opening the disc, and increases the available energy in the cavity. The volume increases the flow rate of the water pump and reduces energy consumption without changing the external dimensions and interfaces of the water pump.

Description

technical field [0001] The invention relates to a cooling water pump for an internal combustion engine and a production process thereof, belonging to the technical field of auto parts. Background technique [0002] When the internal combustion engine is working, it needs to be cooled to prevent the temperature from rising. Usually, the cooling water pump is used to press the cooling water for water cooling. Due to the complex structure of the internal combustion engine, the internal cooling channel is curved and narrow, and the resistance to water flow is large. The size of the flow rate has become the key to the cooling effect of the internal combustion engine. [0003] Most of the existing cooling water pumps for internal combustion engines are mechanical water pumps. The operation of the water pump depends on the transmission of the engine shaft. When the engine speed is high, the water pump speed is high and the flow rate is increased. When the engine speed is low, the f...

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Problems solved by technology

[0003] Most of the existing cooling water pumps for internal combustion engines are mechanical water pumps. The operation of the water pump depends on the transmission of the engine shaft. When the engine speed is high, the water pump speed is high and the flow rate is increased. When the engine speed is low, the flow rate is reduced; The engine itself does not need the cooling system to work, but the engine water pump will start to work with the engine running, which will cause the engine to warm up for a long time, the engine fuel consumption is high, and the emission is poor. The flow rate of the water pump cannot meet the needs of the engine cooling system. make adjustments

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