···
Log in / Register

Principle and Maintenance of Electric Power Steering?

1 Answers
NaomiRose
09/04/25 8:29am
Electronic power steering works by connecting a torque sensor to the steering shaft (pinion shaft). When the steering shaft rotates, the torque sensor activates. Here are the details: 1. Basic Principle: The relative angular displacement between the input and output shafts caused by the torsion bar is converted into an electrical signal and sent to the ECU. The ECU determines the motor's rotation direction and the magnitude of the assist current based on signals from the vehicle speed sensor and torque sensor, achieving real-time control of power steering. This ensures different levels of motor assistance at varying speeds, providing light and flexible steering at low speeds and stable, reliable steering at high speeds. 2. Troubleshooting: The "EPS" warning light or a "steering wheel" warning light may illuminate. To diagnose, connect a computer diagnostic tool to read the fault code and proceed with repairs accordingly. Common issues include sensor or motor failures.
Was this review help?
2
4
Share
More Forum Discussions

What Causes the Striped Marks on Power Window Glass?

Power window glass may develop striped marks due to sharp objects in the window regulator scratching the glass during operation or external force impacts. Here are solutions for addressing scratches on power window glass: Perform Glass Scratch Repair: Use automotive glass repair kits to treat cracks or minor damage. This process is time-efficient and won't affect daily vehicle use, as it primarily involves filling cracks with liquid resin to seal the gaps. Remove Sharp Objects from Window Regulator: If the glass damage is caused by foreign objects in the regulator, the owner or a professional should promptly remove these sharp objects from the window regulator.
10
0
Share

What does TCU mean in a car?

TCU in a car refers to the Transmission Control Unit. When this indicator light is on, it indicates a fault in this module. Here is some relevant information about TCU: Function: The Transmission Control Module helps the transmission decide when and how to shift gears by collecting information from various sensors and the Engine Control Module, thereby improving vehicle performance, ensuring smooth gear shifts, and saving fuel. Working Principle: The Malfunction Indicator Lamp (MIL), also known as the Check Engine Light, illuminates a yellow or red engine symbol on the dashboard when the control module detects a fault. This fault code indicates that the Powertrain Control Module (ECU) has received a request from the Transmission Control System (TCU) to illuminate the malfunction indicator lamp.
8
5
Share

Can You Directly Add More Engine Oil When It's Low?

Generally, you can directly add more engine oil when it's insufficient. However, the oil you add must be the same brand and type; mixing different oils is not allowed. Additionally, opened engine oil can be used for topping up if it's been less than a year since opening. If it's been over a year, the oil is likely ineffective and not recommended for use. Details are as follows: 1. Effects of insufficient engine oil: Engine oil, also known as engine lubricant, reduces friction and wear on engine components. When oil levels are low, lubrication is insufficient, increasing friction and accelerating wear on engine parts. Prolonged oil deficiency can lead to severe issues like engine overheating, causing mechanical failures in moving parts, shortening engine lifespan, or even engine failure. 2. Regular oil replenishment is necessary: Engine oil plays a crucial role in the lubrication system. However, it cannot be recycled indefinitely. Cars require regular oil changes and top-ups to prevent adverse effects from low oil levels.
7
1
Share

Why is the truck not consuming urea?

There are several reasons why a heavy-duty truck might not be consuming urea: 1. Nozzle clogging: The most common cause of nozzle clogging is the use of substandard urea solution, which contains impurities that can block the nozzle. 2. Exhaust treatment system: There is an integrated chip control between the engine and the urea tank that determines how much urea solution needs to be injected based on the engine's power output. If the nozzle is clogged and cannot spray urea, it will result in a decrease in engine power. Below is more information about urea: 1. Urea: Urea is the common name; its formal name is Diesel Exhaust Fluid (DEF). Other names include vehicle urea, automotive urea, and vehicle environmental urea. 2. Technology: Urea is a consumable required in Selective Catalytic Reduction (SCR) technology. SCR technology was developed by engine manufacturers to meet the requirements of environmental regulations. 3. Ammonia: Under normal circumstances, urea is harmless to the human body. However, urea decomposes into ammonia at high temperatures. Prolonged exposure to ammonia may lead to symptoms such as skin pigmentation or ulcers.
11
4
Share

What are the benefits of multi-point fuel injection?

The advantages include high combustion efficiency; more economical fuel consumption through better air-fuel ratio control; and mature technology. Below is related knowledge about fuel injection: 1. How multi-point fuel injection works: Primarily, a fuel injector is installed in the intake manifold corresponding to each cylinder. The injector is controlled by the ECU, replacing the traditional carburetor used in gasoline engines to mix air and fuel for combustion. Moreover, the injector is positioned at the valve, facilitating the direct entry of well-mixed air-fuel mixture into the combustion chamber, ultimately achieving higher combustion efficiency. 2. Advantages: Compared to traditional single-point fuel injection technology, multi-point fuel injection technology can employ sequential injection, allowing for higher and more precise control of the air-fuel ratio than traditional methods. This results in reduced emissions of toxic gases and greater fuel economy.
11
0
Share

How Many Liters of Transmission Fluid Does the Mazda6 Require?

Mazda6 transmission fluid requires approximately 4-5 liters. Below are the detailed specifications of the Mazda6: 1. Body Dimensions: The Mazda6 is a mid-size car under the Mazda brand. It has a wheelbase of 2675mm, with length, width, and height dimensions of 4670mm, 1780mm, and 1435mm, respectively. 2. Powertrain Configuration: This model is equipped with two engines: a 2.0L naturally aspirated engine and a 2.3L naturally aspirated engine. The 2.0L naturally aspirated engine delivers 147 horsepower and a maximum torque of 183 Nm, with a maximum power output at 6500 rpm and peak torque at 4000 rpm. It is paired with either a 6-speed manual transmission or a 5AT transmission. The 2.3L naturally aspirated engine produces 163 horsepower and a maximum torque of 204 Nm, with a maximum power output at 6500 rpm and peak torque at 4000 rpm. It is matched with either a 5AT transmission or a 6-speed manual transmission. 3. Suspension Configuration: The Mazda6 features a double-wishbone independent front suspension and a multi-link independent rear suspension.
12
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.