The water pump is responsible for driving the circulation of coolant, ensuring that the engine operates at an ideal temperature of 80-90℃. If the water pump fails, the coolant circulation will be interrupted, directly leading to engine overheating, power loss, and even engine blockage.
The water pump shaft and bearing, as the core transmission component of the water pump, undertake the crucial tasks of supporting the rotation of the impeller and transmitting power. Its reliability directly affects the lifespan of the water pump and the stability of the cooling system.
The failure has a global impact.
The damage of the shaft-connected bearing can cause coolant leakage, abnormal noise, and the stoppage of the water pump impeller, which will further trigger the engine high-temperature alarm 1721. According to statistics, about 30% of water pump failures are caused by the failure of the shaft-connected bearing 712.
II. Integrated Function of Drive Shaft and Bearings
Integrated Structural Design
Unlike traditional split-type bearings (independent bearings + drive shaft), the pump shaft and bearing adopt an integrated design:
The drive shaft is directly used as the inner ring of the bearing, with the raceway machined on the shaft; the outer ring is an integral structure, sealed on both sides with seals 210. This design significantly simplifies the structure, reduces assembly steps, and enhances the system rigidity 520. Performance advantages
High load capacity: By optimizing the number of rollers (such as increasing the number of steel balls from 10 to 12 as mentioned in the patent) and materials (carburized bearing steel), it can withstand high-speed operation at 6000-9000 r/min and high-temperature and high-pressure conditions of 510;
Compact space adaptation: The radial size is smaller than that of traditional bearings, suitable for the limited space in the engine compartment 916;
Lifelong lubrication: Pre-filled with high-temperature grease (such as 2-3 lithium-based grease) and using radial contact seals to ensure long-term maintenance-free operation 925.
III. Industry Applications and Technological Evolution
Standard configuration for mainstream car manufacturers: This structure is widely adopted by German (Mercedes-Benz, Audi), Japanese (Toyota) and domestic car models, replacing the traditional double deep groove ball bearing solution 1018;
Technology iteration: For example, patent CN202010482629X increases the size of steel balls (∅5.556→∅6.35) and adds a filtering mechanism, significantly reducing the failure rate 5;
Failure prevention: Optimizing the material of the sealing ring (from nitrile rubber to fluorine rubber) to cope with high-temperature environments above 120℃ 916.
Conclusion
The water pump shaft connection bearing, by integrating the functions of the transmission shaft and the bearing, has become a core guarantee for the efficient operation of the cooling system. Its integrated design, high reliability and adaptability make it an irreplaceable key component in modern automotive engines. Relevant technologies are still continuously upgrading to meet the higher temperature requirements of new energy vehicles 526.
The above content is all collected, summarized and generated by AI and is for reference only.
Type: Life Services
DeepSeek-R1 - Full-featured Networked Version 671B
1. What are the components of a car's cooling system?
A car's water cooling system consists of a water pump, radiator, cooling fan, thermostat, expansion tank, water jacket in the engine block, and cylinder head, among other auxiliary devices. Among them, the water pump is a centrifugal water pump, whose function is to pressurize the coolant and ensure its circulation in the cooling system, making it an important part of the cooling system. 1. Water pump: The water pump is the core component of the cooling system. It makes the coolant flow and cool the engine. If the water pump is damaged, the engine's water temperature will rise. 2. Thermostat: The thermostat's role is to distinguish between large and small circulation, allowing the engine's temperature to quickly reach the ideal state. It can also save fuel when the water temperature rises. 3. Water temperature sensor: The water temperature sensor is mostly installed at the engine's water outlet and mainly measures the engine's water temperature, serving as the basis for fuel injection control. 4. Radiator: The radiator stores a large amount of coolant and acts as the medium for heat exchange between the engine and the outside world, allowing the engine's heat to be dissipated through the radiator. 5. Radiator fan: When the water temperature reaches a certain level, the module will control the operation of the electronic fan to dissipate the heat in the radiator. 6. Water pipes: Without the connection of water pipes, there would be no cooling system. There are many water pipes in the car, most of which are rubber hoses. If a water pipe leaks, it should be repaired in time.
baike.pcauto.com.cn
2024-08-23
2. What is a car water pump coupling bearing?
The automotive engine cooling system is an important component of a car. The stability, reliability and compact structure of the system not only directly affect the mechanical performance of the car, but also influence the overall appearance of the car. Therefore, in the automotive engine cooling systems developed and produced by various countries, the cooling pump shafts generally adopt bearings. The function of the car water pump is to circulate the cooling water between the engine water jacket and the radiator to ensure that the engine operates normally within a certain temperature range; the pump mainly consists of a housing, a pulley, a shaft and a bearing, a slip ring seal and an impeller, etc. The bearing plays a decisive role in the service life of the entire pump and also determines the main performance of the pump such as noise. According to the structural characteristics of the shaft-type bearing, the shaft serving as the inner ring of the bearing should have a contact fatigue life corresponding to the bearing. During the operation of the bearing, under the long-term action of periodic loads, cracks form and expand on the raceway and rolling element surfaces until the raceway or rolling element surface experiences fatigue spalling. Once this occurs during the operation of the bearing, its vibration and noise will increase sharply, causing the entire machine to lose its working ability. It can be seen that to increase the service life of the shaft coupling bearing, in addition to considering the wear resistance and fatigue strength required of the shaft, a higher contact fatigue life is also needed. High-carbon chromium bearing steel (GCr15) is used for conventional shaft coupling bearings (including the shaft, outer ring and balls). Since high-quality bearing steel is vacuum deoxidized and electromagnetic stirred during smelting, it has a low oxide content and can withstand large contact compressive stress, as well as large tensile stress. After heat treatment, the hardness of the shaft raceway is 58-62HRC, the hardness of the ring raceway is 60-64HRC, and the hardness of the balls and rollers is 61-65HRC. 0 Audi is about to be popular again! 16,000+ sold in 30 days, 2.0T + 7-speed transmission, powerful and stable at high speed like a bull. Huazhi Shu 1st January: In the sedan ranking of January, an "underdog" emerged among domestic brands, with the New Bora leading the growth and entering the top three. BMW's zero-gravity seats are unveiled, comfortable and safe. If you like them, save up for the X7! Online Auto Market 06:44 A mysterious Chinese car has arrived in Russia! The foreign wife happily received her new car and exclaimed: Chinese cars are so beautiful! Suggestion for car owners: After the car reaches 60,000 kilometers, even if these 5 parts are not broken, they should be replaced. Don't just brush it off. 241,000 yuan spent on a Highlander, but bought a L version of the Edge instead. The difference is too big and I regret it. I'm so angry. I spent 2 million yuan on a Maybach, but I regret it after driving it for a year and a half. I want to sell it, but I'm not sure if I'll lose 800,000 yuan.
www.yoojia.com
2022-11-25
3. Where is the water pump of the modern Sonata located?
The water pump of the modern Sonata is located inside the engine block, which is an important component of the car's engine cooling system. The main function of the water pump is to maintain the engine's temperature by circulating the coolant, ensuring it operates within an appropriate temperature range. Specifically, the water pump consists of several key components, including the pump housing, the connection plate or pulley, the pump shaft and bearings or shaft-mounted bearings, the impeller, and the water seal device. When the water pump malfunctions, various fault symptoms may occur. Firstly, if the water pump is damaged, the coolant's circulation capacity will weaken or even stop, causing the coolant to boil, commonly known as "boiling over". Secondly, there may be leakage at the part of the engine near the water pump, and the leaked coolant will leave obvious traces on the water pump's ventilation holes, which will lead to a reduction in coolant and subsequently cause the engine temperature to rise too high. Finally, if the water pump makes abnormal noises when the engine is running, it may be due to foreign objects inside or worn bearings. In summary, the water pump of the modern Sonata is located inside the engine block and is a key component for maintaining the engine's temperature stability. If the water pump has problems, it needs to be inspected or replaced in a timely manner to ensure the normal operation of the engine. This content is from user posts and does not represent the views and positions of Autohome. Related car series The water pump in a car is a key component of the engine cooling system, responsible for circulating the coolant to keep the engine within an appropriate working temperature range. When the water pump malfunctions or its performance declines, replacing the water pump becomes a necessary maintenance measure. This article will explore in detail the possible impacts of replacing the water pump on the vehicle. Firstly, replacing the water pump restores the efficiency of the cooling system. The main function of the water pump is. Autohome Car Forum 3026441 How to replace the car's water pump to ensure the normal operation of the engine? Replacing the car's water pump is one of the important maintenance steps to ensure the normal operation of the engine. The water pump is responsible for circulating the coolant to prevent the engine from overheating. The following are the detailed replacement steps and precautions to help you complete this task smoothly. First, prepare the following tools and materials: a new water pump, coolant, wrench, screwdriver, sealant, cleaning cloth, and antifreeze. The water pump of a BMW car is a key component of the cooling system, responsible for circulating the coolant to keep the engine within an appropriate working temperature.
Autohome 2024-11-22
4. Where is the electronic water pump of Audi A6L installed?
Specifically, it is located below the interface between the engine and the transmission. You can see it by removing the throttle body, and it is integrated with the thermostat. The car water pump has a self-priming function. When the suction pipe is filled with air, the negative pressure formed by the operation of the pump will draw the water below the suction port up under the action of atmospheric pressure and then discharge it from the drainage end. There are multiple water channels for cooling water circulation in the engine cylinders, which are connected to the radiator at the front of the car through water pipes, forming a large water circulation system. The content comes from the Internet and does not represent the views and positions of Autohome. Related car series The water pump of Corolla is located in the engine compartment, specifically on the right side of the engine. The water pump is a key component of the car's cooling system. Its structure includes the water pump housing, connection plate or pulley, water pump shaft and bearing or shaft-connected bearing, water pump impeller and water seal device. If there is a water leakage problem with the water pump, first drain the antifreeze in the water pump and remove the V-belt. Then, make sure. What are the reasons for the damage of the car water pump? There are various reasons for the damage of the car water pump. First, the aging of the water pump seal ring can cause coolant leakage. Secondly, if the antifreeze is not replaced for a long time, it will cause internal corrosion and damage the water pump.
Autohome 2025-01-13
5. A manufacturing technology for an automotive water pump with an integrated bearing
Patent search for a manufacturing technology for an automotive water pump with an integrated bearing. This technology provides an automotive water pump with an integrated bearing, which belongs to the field of automotive parts technology. This automotive water pump with an integrated bearing includes a pump body, a drive rod that penetrates through the top of the pump body, a transmission shaft welded to the bottom of the drive rod and extending into the inner cavity of the pump body, a wheel fixed on the bottom surface of the transmission shaft, a steel ball set on the right side of the top of the inner cavity of the pump body, a mechanical seal fixed on the center of the transmission shaft, an outlet at the rear side of the bottom of the pump body, an inlet at the right side of the bottom of the pump body, and a filtering mechanism at the rear side of the outlet. The filtering mechanism includes a filtering shell, and the connection between the side of the filtering shell close to the outlet and the outlet is made through a connecting flange in a detachable manner. This technology has the function of filtering impurities in the coolant, thereby extending the service life of the main body of the automotive water pump. It has a stable structure and is convenient to use. This technology belongs to automotive parts equipment and involves one type. 1. When the coolant is transmitted in an automotive water pump, the ordinary automotive water pump needs to be improved. The existing spherical surface processing improved lathe, such as the Chinese patent with patent number: 202010482629.x and authorized announcement number: CN111622983B, describes an automotive water pump, which includes a pump body, a pump cavity inside the pump body, a pump cover fixedly installed at the right end opening of the pump cavity, a power shaft rotatably connected inside the pump cover, a wheel fixedly installed on the power shaft inside the pump cavity; the side of the pump body along the axial direction of the power shaft is provided with an inlet pipe, and along the tangent direction of the wheel, an outlet pipe is provided; the outer circumferential surface of the wheel is provided with multiple slots evenly spaced along the circumference, and each slot is slidably connected with a blade; the pump cover is provided with a regulating component, which is used to control the blades to extend out of or retract into the slots; when the blades are completely retracted into the slots, the water pump does not discharge water, and when the blades are completely extended out of the slots, the water pump has the maximum discharge volume; this automotive water pump not only has a simple structure but also has a variable discharge volume. 2. In the above structure, the automotive water pump is provided with a regulating component for adjusting the blades, but it does not have the function of filtering coolant with large particles, resulting in a relatively high failure rate. Technical realization idea 1. The purpose of this technology is to provide an automotive water pump with an integrated bearing that has a simple structure and a coolant circulation filtering function in view of the above problems in the existing technology. 2. The purpose of this technology can be achieved through the following technical solution: an automotive water pump with an integrated bearing, including a pump body, a drive rod penetrating through the top of the pump body, a transmission shaft welded to the bottom of the drive rod and extending into the inner cavity of the pump body, a wheel fixed on the bottom surface of the transmission shaft, a steel ball set on the right side of the top of the inner cavity of the pump body, a mechanical seal fixed on the center of the transmission shaft, an outlet at the rear side of the bottom of the pump body, an inlet at the right side of the bottom of the pump body, and a filtering mechanism at the rear side of the outlet. The filtering mechanism includes a filtering shell, and the connection between the side of the filtering shell close to the outlet and the outlet is made through a connecting flange in a detachable manner. 3. This automotive water pump with an integrated bearing mainly sets a filtering mechanism at the outlet of the water pump, and uses a screw-in type filtering core to filter impurities in the coolant, thereby extending the service life of the main body of the automotive water pump. It has a stable structure and is convenient to use. 4. In the above automotive water pump with an integrated bearing, the top of the pump body is provided with positioning screw holes, and the number of positioning screw holes is several. In actual application, the positioning screws do not need to be fully used, and a part of them can be used to fix it well. 5. In the above-mentioned axial connecting bearing automotive water pump, the top of the surface of the drive rod is fixedly sleeved with an axial connecting bearing, and the side of the axial connecting bearing close to the inner wall of the pump body is welded to the inner wall of the pump body. The purpose of this setting is to ensure that the axial connecting bearing can provide better support stability during operation.
6. In the above-mentioned axial connecting bearing automotive water pump, the right side of the inner cavity of the filter shell is provided with positioning blocks at the front and back, and the inner wall of the filter shell away from the liquid outlet end is threadedly connected with an outer threaded roller-shaped filter core, and the right side of the outer threaded roller-shaped filter core is provided with a positioning slot. The purpose of this setting is to enable the filter core to be quickly removed when cleaning is needed, thereby avoiding clogging.
7. In the above-mentioned axial connecting bearing automotive water pump, the side of the filter shell away from the liquid outlet end is welded with a sealing flange, and the bottom of the filter shell is provided with an observation mirror passing through it. The top of the mechanical seal is provided with a sealing spring. The purpose of this setting is to facilitate the installation and use of the component through the cooperation of multiple connection flanges.
8. Compared with the existing technology, the advantages of this axial connecting bearing automotive water pump are: reasonable and simple structure design, capable of filtering the circulating coolant during use. At the same time, the size of the steel balls inside the axial connecting bearing is improved from ∅5.556 to ∅6.35, and the number is increased from 10 to 12 to enhance the load capacity of the bearing. The probability of bearing quality problems after the water pump is installed is greatly reduced, thereby improving the overall quality of the automotive water pump. 1. An axial connecting bearing automotive water pump, including a pump body (1), characterized in that: the top of the pump body (1) is provided with a drive rod (5) passing through it, and the bottom of the drive rod (5) passes through
