How to Identify the Authenticity of Engine Oil?

What Causes Oil Leakage in the Torque Converter?

The cause of oil leakage in the torque converter may be due to assembly process issues or deformation of a certain component. Function of the Torque Converter: The torque converter serves to transmit torque, change torque, shift gears, and act as a clutch. It is typically installed between the engine power unit and the transmission, with ATF (Automatic Transmission Fluid) hydraulic pressure acting as the working medium. It helps transfer engine power to the gears, thereby reducing the impact force experienced during gear shifts. This is very similar to the semi-engaged state of a manual transmission clutch. Moreover, when the rotational speed reaches a certain level, the torque converter automatically locks. Introduction to the Torque Converter: The torque converter, also known as the hydraulic torque converter, is a component in automatic transmissions designed to assist the engine flywheel in transmitting power. It directly replaces the traditional clutch in manual transmissions and consists of three hydraulic elements: the impeller (pump), turbine, and stator. As a non-rigid torque converter that operates using fluid as the medium, it transmits power in liquid form. It includes a sealed working chamber where the fluid circulates continuously. The impeller, turbine, and stator are each connected to the input shaft, output shaft, and housing, respectively, to perform their functions.

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What is an Engine Type Approval Number?

Engine Type Approval Number is the code on the vehicle type approval certificate. Below are specific details about the Engine Type Approval Number: 1. Meaning: The first two letters CN represent China; the next two letters, ZC represents heavy-duty vehicles equipped with compression ignition engines; if it is QQ, it represents light-duty gasoline vehicles; QC represents light-duty diesel vehicles; CJ represents compression ignition engines; QL represents light-duty dual-fuel vehicles. 2. Additional Information: The Type Approval Certificate is used for motor vehicle type approval. Automobile manufacturers must apply for and obtain national approval for the type approval of pollutant emission control performance to produce and sell vehicles. The type approval application for a vehicle model should be submitted by the automobile manufacturer, and the content of the application includes exhaust pollutants, crankcase pollutants, evaporative pollutants, durability of pollution control devices, and OBD systems for a vehicle model.

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What are the reasons for the failure to engage manual four-wheel drive?

Possible reasons for the failure to engage manual four-wheel drive include blown fuses, malfunctioning transfer case computer, and faults in the drive motor or control switch. Advantages of four-wheel drive vehicles: The benefits of four-wheel drive vehicles mainly include sufficient power, stability during turns, reduced likelihood of slipping while driving, strong traction, high off-road capability, and the ability to distribute engine torque between the front and rear wheels in varying proportions based on road conditions, thereby enhancing the vehicle's driving performance. Classification of four-wheel drive vehicles: Four-wheel drive vehicles are primarily divided into three types: full-time four-wheel drive, part-time four-wheel drive, and on-demand four-wheel drive. Full-time four-wheel drive offers the highest cornering limit on roads, providing optimal driving force distribution to each wheel during high-speed turns. However, the structure of full-time drive is complex, costly, and consumes more power, making it unsuitable for small economy vehicles. Part-time four-wheel drive has a simpler structure, better reliability, lower cost compared to full-time drive, and greater flexibility. However, part-time four-wheel drive requires higher driving skills, as engaging it is equivalent to a rigid axle connection, which requires careful handling. On-demand four-wheel drive is more cost-effective and can significantly reduce vehicle weight compared to full-time four-wheel drive. However, when transmitting power between the front and rear axles, on-demand four-wheel drive is limited by the vehicle's structure and cannot deliver more than 50% of the power to the rear axle.

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Is it normal for a new car to have paint spots?

It is normal for a new car to have paint spots. Checking the vehicle's exterior: To better inspect the condition of a new car, consumers usually don't have professional tools, so the only method is to observe with the naked eye. To check for scratches and wear on the paint, park the vehicle in an outdoor area with ample light and then examine whether the paint is even. Checking the production date of the new car's glass: As shown in the image, the numbers represent the most recent production year, and the dots represent the production month. If the dots are on the left side of the number, it indicates production in the first half of the year—subtract the number of black dots from 7 to get the specific month. If the dots are on the right side of the number, it indicates production in the second half of the year—subtract the number of black dots from 13 to get the specific month. If the production date of the windshield glass is far from the new car's production date, such as a year or more, it is highly likely that the windshield glass has been replaced. Checking the wear and tear of the new car: Observe whether there is obvious wear on the tire surface. Generally, new tires will have intact tread hairs, but it's not impossible that the manufacturer has removed the tread hairs. Therefore, you can check the chassis for scratches to prevent the vehicle from being driven aggressively by employees during transportation.

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How to Turn Off the Maintenance Indicator on the Vehicle Dashboard?

Some vehicle models allow the maintenance reminder light to be turned off using the mode button, while others require the use of a diagnostic tool. When the maintenance reminder light comes on, it generally indicates that the vehicle has reached the next scheduled maintenance mileage, at which point the vehicle's computer system will automatically alert the owner. Related information: 1. Vehicle maintenance: Technical work involving cleaning, inspection, tightening, lubrication, and adjustment of the vehicle. 2. Dashboard: A rigid panel or structural component used to install instruments and related devices, categorized by type into screen dashboards, frame dashboards, passage dashboards, and cabinet dashboards.

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How to Get a Car Moved Without Leaving a Phone Number?

Solutions for moving a car without a contact number are as follows: 1. Call 114: You can dial this number to find the contact information of the corresponding car owner to request moving the car, achieving the goal through friendly negotiation. 2. Call 122: 122 is the telephone number set up by China's public security traffic management authorities to accept public reports of traffic accidents, dispatch police officers to handle various reports and requests, and at the same time accept public reports, complaints, and inquiries regarding traffic management and traffic police law enforcement. In this case, the power of the traffic police can be utilized to handle situations where the car owner deliberately refuses to move the vehicle. 3. Call the insurance company: You can seek help from the insurance company. If the car is scratched, the insurance company will immediately contact the car owner to handle the accident.

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How to Identify the Authenticity of Engine Oil?

What Causes Oil Leakage in the Torque Converter?

What is an Engine Type Approval Number?

What are the reasons for the failure to engage manual four-wheel drive?

Is it normal for a new car to have paint spots?

How to Turn Off the Maintenance Indicator on the Vehicle Dashboard?

How to Get a Car Moved Without Leaving a Phone Number?

What are the reasons for no response from the car after jump-starting?

How to Check Engine Oil?

What are the testing standards for steam turbine lubricating oil?

What Causes Unstable Idle Speed and Stalling in Motorcycles?