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What type of oil is used in a rotary vane vacuum pump?

1 Answers
DiFelix
07/30/25 6:57am
Rotary vane vacuum pumps use vacuum pump oil. Below is relevant information about rotary vane vacuum pumps: 1. Introduction to rotary vane vacuum pumps: A rotary vane vacuum pump has an eccentrically installed rotor that contacts the fixed surface of the stator. Two vanes slide within the rotor slots and contact the inner wall of the stator, dividing the pump chamber into several variable volumes—a type of rotary positive displacement vacuum pump. Typically, the gap between the vanes and the pump chamber is sealed with oil, making rotary vane vacuum pumps generally oil-sealed mechanical vacuum pumps. 2. Applications of rotary vane vacuum pumps: Their working pressure range is 101325–1.33×10-2 (Pa), classifying them as low-vacuum pumps. They can be used independently or as backing pumps for other high-vacuum or ultra-high-vacuum pumps. They are widely applied in production and research sectors such as metallurgy, machinery, military industry, electronics, chemical engineering, light industry, petroleum, and pharmaceuticals.
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Why does the car make noise?

Cars may make noise due to electrical currents inside the vehicle and the sound of thermal expansion and contraction in the engine compartment, which is a normal phenomenon. Below are related solutions for abnormal noises after the car is turned off: 1. Observe the cause without turning off the engine: Try not to turn off the engine immediately after parking and wait for a while. If the noise persists after doing this, it should be checked. 2. Engine metal components: If there is no noise when you wait a while before turning off the engine, it means the noise is caused by friction between some metal component joints in the engine due to cooling contraction, which is normal and does not require maintenance. 3. Normal electrical current situation: If there are no other abnormalities with the car, it is a normal phenomenon and does not require maintenance.
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How to Drive an Automatic Transmission Car?

Steps for driving an automatic transmission car: 1. Start the engine in N gear: When starting the engine, place the gear in N or P. 2. Starting off: After starting the engine, wait a few seconds before shifting into gear to allow the transmission to be fully lubricated. Then, press the brake, shift into the correct gear, slowly release the brake pedal, and the vehicle will start normally. 3. Driving on general roads: When driving on general roads, place the gear selector in D and gradually increase the throttle. Avoid sudden acceleration unless necessary. 4. Driving uphill: On short and gentle slopes, keep the selector in D or 2 and control the throttle to complete the climb. For long and steep slopes, set the gear to 1 and shift to D when the speed exceeds 30 km/h. 5. Driving downhill: On general downhill roads, use D along with the brake to control the vehicle. For long and steep slopes, set the gear to 1. 6. Starting on snow: Place the selector in 2 to prevent wheel slip, then shift to D once the car moves slowly. 7. Reversing: In reverse gear, gently press the throttle to move the vehicle. 8. Parking: For short stops (under 3 minutes), place the gear in N, engage the handbrake, and release the foot brake to reduce driver fatigue. For long stops, set the gear to P and engage the handbrake.
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What to Do If You Have a Driver's License but Didn't Bring It with You?

If you have a driver's license but didn't bring it with you, you can prove that you indeed possess a license by providing your ID card for verification. Here are specific solutions for not carrying your driver's license: 1. Show a photo of your driver's license: Save a photo of your driver's license in your phone, including both the main page and the supplementary page. When stopped by traffic police, you can explain that you have a driver's license but didn't bring it with you, and provide the photo for verification. Note that the photo must be clear. 2. ID card verification: Traffic police can check whether you have obtained a driver's license and its current status by your ID card number, thereby proving that you have a driver's license.
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What is the fuel consumption of the Volkswagen Passat?

Volkswagen Passat 1.4T model has a combined fuel consumption of approximately 7.5 liters per 100 kilometers, while the 2.0T model consumes about 9.0 liters per 100 kilometers. Here are specific methods to reduce fuel consumption: 1. Lightly press the accelerator: The initial low-speed acceleration phase is the peak fuel consumption period, so gently pressing the accelerator during startup can prevent excessively high RPM and effectively reduce fuel consumption. 2. Avoid high RPM: Try to avoid unnecessary high RPM as fluctuating engine speeds significantly increase fuel consumption. 3. Regular maintenance: Change engine oil and remove carbon deposits. 4. Avoid emergency braking: Anticipating road conditions in advance not only enhances driving safety but also saves fuel. For example, gradually decelerating before traffic lights and utilizing inertia to glide.
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Which Indicator Shows Fuel Consumption in the Car Dashboard?

The car dashboard does not display fuel consumption; it is shown on the trip computer. Here are some related introductions about car fuel consumption: 1. Influencing factors: The relationship between car weight and fuel consumption is directly proportional. For every 10% reduction in car weight, fuel consumption will also decrease by several percentage points. A smaller body drag coefficient will significantly reduce fuel consumption, and the relationship between these two is also directly proportional. 2. Methods to reduce fuel consumption: Inflate the tires properly in time; regularly clean carbon deposits at the service station; replace spark plugs periodically. If spark plugs are used for too long, it may also lead to increased fuel consumption.
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Where is the electronic fan fuse located in a Ford Focus?

The fuse box of the Ford Focus is located on the driver's side of the center console. Here is some related information about the Ford Focus: 1. Model Introduction: The new-generation Ford Focus 2020 model features upgraded appearance and configurations, with all models complying with the China VI emission standards. Additionally, the new-generation Ford Focus 2020 model offers an extended engine warranty policy of 5 years or 200,000 kilometers. 2. Configurations: The Ford Focus is equipped with the SYNC+ intelligent infotainment system. This system boasts industry-leading natural semantic recognition capabilities, supports multi-scenario wake-free operation, and understands mixed Chinese-English commands. It can engage in casual conversations, tell jokes, and control four major functions—entertainment, intelligent navigation, communication, and cabin temperature—via voice commands.
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