···
Log in / Register

What is Diesel Exhaust Fluid?

1Answers
VonSilas
07/24/2025, 06:12:00 AM

Diesel Exhaust Fluid (commonly known in China as: automotive urea, vehicle urea, or automotive environmental urea) is a consumable essential for SCR technology. Below is relevant information: 1. SCR: The SCR system includes a urea tank (containing Diesel Exhaust Fluid) and an SCR catalytic reaction tank. 2. Operation process: The operation process of the SCR system is that when nitrogen oxides are detected in the exhaust pipe, the urea tank automatically sprays Diesel Exhaust Fluid. The Diesel Exhaust Fluid and nitrogen oxides undergo a redox reaction in the SCR catalytic reaction tank, producing non-polluting nitrogen and water vapor which are then discharged.

Was this review help?
109
Share
More Q&A

How many types of transmissions are there?

Transmissions are divided into four types: AT transmission, CVT transmission, AMT transmission, and dual-clutch transmission. Also known as a gearbox, the transmission is an automotive component used to alter the speed and torque from the engine, and it can fix or change the transmission ratio between the output shaft and the input shaft in different gears. The transmission consists of a gear transmission mechanism and a control mechanism, with some vehicles also including a power output mechanism. It can be categorized into stepped, continuously variable, and integrated transmissions, providing functions such as enabling reverse driving, interrupting power transmission, and changing gear ratios. The transmission is a crucial component in vehicles, as it can alter the gear ratio and expand the torque and speed effects on the driving wheels. Currently, diesel engines are widely used in construction machinery, but their torque and speed variation range is limited, making it unable to meet the requirements for traction and driving speed under various operating conditions. Therefore, transmissions are employed to resolve this contradiction.
101
Share

What is the original tire model of Mazda6?

Mazda6's original tire model is 205/55R16. Here is the relevant introduction: 1. Automobile tires: Automobile tires can be divided into pneumatic tires and solid tires according to different carcass structures. Most modern automobiles use pneumatic tires. According to the air pressure inside the tire, pneumatic tires can be divided into three types: high-pressure tires, low-pressure tires and ultra-low-pressure tires. 2. Mazda6: The strong triple H-shaped body structure of Mazda6, the front and rear suspension systems and the extremely rigid axle form an organic whole ingeniously. They work together to maximize the absorption of kinetic energy generated in an accident, thus providing excellent protection for passengers.
109
Share

Will the Dash Cam Work When the Car is Not Started?

Dash cams will not record when the car is not powered on. Relevant information about dash cams is as follows: 1. Introduction One: Generally, dash cams are divided into two types—one with parking monitoring and one without. The type with parking monitoring can continue recording even when the car is turned off. Its working principle is that when the car body is impacted or when movement is detected in front of the car, the dash cam will automatically wake up and activate the monitoring function. 2. Introduction Two: However, this type of dash cam consumes power from the car battery. If left on for a long time, the car may not start due to battery drain.
106
Share

What is the fuel consumption of a 1.8L engine?

The fuel consumption of a 1.8L engine is around 9L. Here is an introduction about engine displacement: 1. Definition: Displacement (Swept-volume), a specialized term in hydraulic transmission, refers to the volume of fluid inhaled or discharged per stroke or cycle. 2. Content: Generally, a larger displacement means the engine releases more energy per unit time (converting chemical energy from fuel into mechanical energy), which translates to better "power performance." It's like comparing a teenager to a healthy adult—the adult is naturally more efficient at physical labor. Therefore, off-road vehicles and sports cars usually have relatively larger displacements. 3. Displacement explanation: A T-type engine uses intake turbocharging, which effectively increases the cylinder's compression ratio and exhaust displacement, thereby enhancing power output.
106
Share

How Many Digits Does an Engine Number Consist Of?

Common engine numbers typically consist of 7-8 digits. The sequence and content of engine numbers may vary among different manufacturers. Generally, they include the engine model, production date, and a randomly assigned serial number given when the engine comes off the production line. Some may also include a production location code. Engine models are identification codes assigned by engine manufacturers in accordance with relevant regulations, corporate or industry practices, and engine attributes. These codes represent information such as the manufacturer, specifications, performance, features, technology, purpose, and batch of the engine, including fuel type, number of cylinders, displacement, and static braking power. Engines installed in passenger cars or multi-purpose vehicles are required to display the professional manufacturer, model, and production number. It's important to note that the engine number is not the same as the engine model. The engine model refers to the specifications and size of the engine within the manufacturer's range, and multiple engines can share the same model. The engine number, however, is a unique production identifier assigned to each individual engine, ensuring no two engines have the same number. Structure of an Engine Number: Prefix: Includes product series codes, revision symbols, and regional or corporate codes. Manufacturers may choose appropriate letters as needed, subject to approval and registration by industry standardization authorities. Middle Section: Composed of symbols representing the number of cylinders, cylinder arrangement, stroke, and cylinder diameter. Suffix: Consists of symbols indicating structural and usage characteristics. Tail: A distinguishing symbol. When differentiation is needed due to improvements or other reasons within the same product series, manufacturers may select appropriate symbols. The suffix and tail may be separated by a hyphen (-).
120
Share

Why is the fuel consumption of Mazda CX-4 high?

Mazda CX-4 high fuel consumption reasons are as follows: 1. Engine carbon deposits: When the engine has carbon deposits and is not cleaned in time, the car's fuel consumption will increase as a result. 2. Spark plug failure: When the spark plug fails, it will slow down the car's acceleration, thereby increasing fuel consumption. 3. Abnormal tire pressure: When the tire pressure is abnormal, the impact on fuel consumption is immediate, because the friction increases, so the fuel consumption increases. 4. Poor fuel injector atomization: Poor fuel injector atomization can lead to blockage, thereby increasing fuel consumption. Sensor failure can cause continuous fuel injection, thereby increasing fuel consumption.
103
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.