How to Understand Car Gears?

What is a Front Bumper Reinforcement Beam?

Front bumper reinforcement beam is a crash beam, which is a device used to absorb collision energy and mitigate impact during vehicle collisions. The front bumper reinforcement beam refers to the structure that provides fixed support for the bumper cover. It consists of a main beam, energy absorption boxes, and mounting plates that connect to the vehicle. Both the main beam and energy absorption boxes can effectively absorb collision energy during low-speed impacts, minimizing damage to the vehicle's longitudinal beams. The front bumper refers to the crossbeam located below the grille and between the fog lights. Bumpers installed at the front and rear of the vehicle not only serve decorative purposes but, more importantly, function as safety devices that absorb and mitigate external impacts, protecting the vehicle body and occupants. Front bumper reinforcement beams are typically replaced directly at auto parts stores or 4S shops, as failure to do so may compromise driving safety. If a damaged front reinforcement beam is left unrepaired, cracks may expand during daily driving, ultimately affecting vehicle safety. Depending on the extent of damage, the beam can be either repaired or replaced. If the damage is minor, welding repairs may suffice. However, if the damage exceeds repairable standards, replacement is necessary. For plastic bumpers, it is recommended to use high-quality structural adhesive for bonding and repainting. Structural adhesive offers high strength, can withstand heavy loads, and features excellent aging resistance, fatigue resistance, corrosion resistance, and stable performance, making it suitable for bonding structural components under high stress. For metal bumpers, welding at an auto repair shop is required. After repairing cracks or deformations in the bumper, the next step is addressing the paint surface. If the repair environment fails to meet dust-free standards, it may affect the paint finish, necessitating professional treatment at an auto repair shop.

14

2

Share

How to align the timing chain on a Polo 1.4?

Introduction to aligning the timing chain on a Polo 1.4: First, remove the two camshaft rear covers. There are two holes on the camshafts; use a special tool to lock them in place. Align the crankshaft to the top dead center, and then install the chain. The "timing belt" or "timing chain" is a crucial component of the engine. Here are some related details: 1. The main function of the "timing belt" or "timing chain" is to drive the engine's valve train, ensuring that the engine's intake and exhaust valves open and close at the appropriate times to allow the engine's cylinders to intake and exhaust air normally. 2. The working principle of the timing chain: It uses a high-strength metal chain to connect the sprockets of components like the crankshaft and camshaft, keeping them synchronized. Due to the high-speed operation between metal parts, wear is rapid and temperatures are high, so a corresponding lubrication system must be designed for cooling and lubrication. Additionally, the use of a timing chain in engine design also presents the issue of friction noise between metal parts. To address this, manufacturers need to take various measures, such as designing optimized chains. Solving these issues inevitably increases the design and manufacturing costs of the engine.

12

5

Share

What maintenance is required for a car at 20,000 kilometers?

Maintenance items for a car at 20,000 kilometers: Inspection and adjustment of valve clearance; Cleaning and protection of the radiator, checking the antifreeze; Replacement of brake fluid; Replacement of the fuel filter for fuel-injected vehicles; Cleaning of the fuel injectors and intake passages. 20,000 kilometers is considered medium maintenance, which includes the replacement of engine oil, oil filter, air filter, and cabin air filter, along with some routine inspections. Below are the related details: 1. Air filter: Proper installation of the air filter can reduce wear on components such as cylinders, pistons, and piston rings. Tuyue Car Service reminds you: Generally, clean the air filter every 5,000 kilometers and replace it every 10,000 kilometers. 2. Oil filter: Proper installation of the oil filter can prevent impurities from mixing into the engine oil during use, avoiding wear on moving parts and oil passage blockages. Tuyue Car Service reminds you: When replacing the lubricating oil, the oil filter must also be replaced; otherwise, it may affect the quality of the lubricating oil. The replacement cycle for engine oil and oil filter is generally every 5,000 kilometers. 3. Fuel filter: Proper installation of the fuel filter can prevent wear on the cylinders caused by impurities and moisture mixed into the gasoline during storage, transportation, and refueling. Tuyue Car Service reminds you: To ensure the engine runs smoothly, the replacement cycle for the fuel filter is generally every 20,000 kilometers or one year.

18

0

Share

What Causes Engine Shaking in Winter?

Engine shaking during cold starts in winter occurs because the engine coolant temperature is too low. To quickly raise the engine to its ideal operating temperature, the fuel supply system automatically enriches the air-fuel mixture, causing the engine to run more aggressively, resulting in unstable operation and significant idle shaking. Therefore, it is advisable to warm up the vehicle before driving in winter. Below are the common causes of cold-start engine shaking: 1. Mechanical engine faults, such as uneven cylinder pressure across cylinders; 2. Intake system issues, such as air leaks in the intake manifold. Excessive carbon buildup on intake valves and the intake manifold, or dirt accumulation on the throttle body and inner walls of the intake manifold; 3. Engine management system malfunctions, such as incorrect coolant or intake air temperature signals, or wiring faults; 4. Ignition system problems, such as excessive carbon deposits on spark plugs or incorrect gap settings, leakage in high-voltage wires or distributor caps, or damaged ignition coils; 5. Fuel supply system faults, such as clogged or leaking fuel injectors due to excessive internal carbon deposits.

10

1

Share

In which year were China IV vehicles produced?

China IV vehicles were produced after 2011, with some being manufactured in 2010 or even earlier. The implementation of the China IV standard varied by region, with some areas adopting it earlier than others. In regions where the standard was implemented earlier, China IV-compliant vehicles were produced sooner. It wasn't until July 1, 2011, that the China IV standard was fully implemented nationwide. Below is some relevant information about the China IV standard: 1. The China IV emission standard is the fourth phase of China's motor vehicle pollutant emission standards. Compared to China III, it requires light-duty vehicles to reduce single-vehicle pollutant emissions by approximately 50%, heavy-duty vehicles to reduce emissions by about 30%, and particulate matter emissions by over 80%. 2. Different countries and regions adopt various emission standards based on their actual conditions. For example, the U.S. has U.S. standards, Europe has Euro standards (such as Euro IV and Euro V), and China has national standards (like China V and China VI). There are three main test cycles for passenger vehicle emissions: the EU's NEDC cycle, the U.S.'s FTP75 cycle, and Japan's JC08 cycle. China's standards are primarily based on European standards, while Japan's standards are more aligned with U.S. standards.

12

2

Share

When will the China 6 emission standard be implemented?

The China 6 standard is divided into two parts. Here are the relevant details: 1. "Limits and Measurement Methods for Emissions from Light-duty Vehicles (China VI)" was implemented nationwide on July 1, 2020; 2. "Limits and Measurement Methods for Emissions from Heavy-duty Diesel Vehicles (China VI)" was implemented nationwide on July 1, 2019. Below is the timeline of emission standard implementations: 1. China 1 standard was implemented nationwide on July 1, 2001, mainly imposing restrictions on carbon monoxide, hydrocarbons, and particulate emissions. 2. China 2 standard was implemented nationwide on July 1, 2004, requiring a 30% reduction in carbon monoxide and a 55% reduction in hydrocarbons and carbon oxides. 3. China 3 standard was implemented nationwide on July 1, 2007, requiring a 40% reduction in total pollutant emissions compared to China 2. 4. China 4 standard was implemented nationwide on July 1, 2010, requiring a 50% to 60% reduction compared to China 3. 5. China 5 standard was implemented nationwide on January 1, 2018, requiring a 25% reduction in nitrogen oxide emissions compared to China 4. 6. China 6 standard: China 6a was implemented nationwide on July 1, 2020, and China 6b will be implemented nationwide on July 1, 2023.

8

3

Share

How to Understand Car Gears?

What is a Front Bumper Reinforcement Beam?

How to align the timing chain on a Polo 1.4?

What maintenance is required for a car at 20,000 kilometers?

What Causes Engine Shaking in Winter?

In which year were China IV vehicles produced?

When will the China 6 emission standard be implemented?

What is the reason for severe shaking when starting the Sail?

Should I Renew the 3-Year Car Warranty After It Expires?

How to Set the Time and Date on a Dash Cam?

What maintenance is required for a new car that has run over 20,000 kilometers?