TAG: ความรู้/เทคนิค

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How ABS Affects Braking Distance and Safety on Slippery Roads

During seasons when road conditions become more hazardous due to rain or slippery surfaces, the Anti-lock Braking System (ABS) plays a crucial role in maintaining safety. But how exactly does it work, and does it really affect braking distance? How ABS Works When you slam on the brakes, wheel sensors detect if any wheel is about to stop spinning (lock up). The ABS system then automatically modulates the brake pressure, rapidly “grabbing and releasing” the brake pads up to 16–50 times per second. This high-speed pulsing prevents wheel lock and allows the tires to maintain traction. Drivers often feel a pulsating sensation in the brake pedal—this is a normal sign that the ABS is working properly. Impact on Braking Distance and Safety On dry or normal roads: ABS may shorten braking distance or make it comparable to standard braking systems, especially during hard braking. The key advantage is better control and stability. On wet or slippery roads: ABS performs at its best, helping maximize traction and prevent skidding or hydroplaning. As a result, braking distance is generally shorter or comparable to non-ABS systems, with the added benefit of steering control. On loose surfaces (gravel/sand/dirt): ABS may increase braking distance slightly compared to non-ABS systems because the wheels don’t lock and dig into the surface to help stop the car. However, ABS allows the driver to maintain steering control, which is vital for avoiding obstacles. ABS is a safety feature designed to prevent wheel lock during hard braking, helping drivers maintain directional control—especially on slippery roads. Still, it’s important to regularly check your brake pads, discs, and brake fluid, and follow maintenance schedules to ensure your braking system performs at its best under all road conditions.

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ICE, HEV, or BEV – Which Type of Car Is Right for You?

The Thai automotive market is undergoing a major transformation! Between the familiar Internal Combustion Engine (ICE) cars, the fuel-efficient Hybrid Electric Vehicles (HEV), and futuristic Battery Electric Vehicles (BEV) — which one suits your lifestyle best? This article breaks down the pros and cons of each type to help you decide.   ICE – Internal Combustion Engine Vehicles These are traditional vehicles powered solely by combustion engines. They operate by converting the chemical energy from fuel (gasoline or diesel) into mechanical energy. Fuel is mixed with air and ignited inside the cylinders, producing high pressure that pushes the pistons. This motion is then transferred to the crankshaft, ultimately driving the wheels. Pros: Time-tested and widely adopted technology. Fully supported infrastructure, including fuel stations and service centers everywhere. Considerations: Requires regular maintenance such as oil changes. Loses some energy to heat and friction, reducing overall efficiency. HEV – Hybrid Electric Vehicles HEVs combine an internal combustion engine with an electric motor. The two systems work together to improve fuel efficiency. There are variations such as: Full Hybrid – can run on electric power alone for short distances. Mild Hybrid (MHEV) – the electric motor only assists the engine but cannot operate the car on its own. Pros: Significantly better fuel economy, especially in city driving. Electric motor boosts acceleration and reduces engine lag. Considerations: More complex systems mean maintenance for both engine and battery components. Still uses gasoline, so emissions are lower but not zero. BEV – Battery Electric Vehicles BEVs run entirely on electricity with no internal combustion engine. They use a large battery to store energy, which is sent through an inverter to power an electric motor that drives the wheels. BEVs produce zero tailpipe emissions, making them an eco-friendly option. Pros: Instant torque from the electric motor allows fast, responsive acceleration. Zero emissions at the tailpipe — better for the environment. Considerations: Charging takes significantly longer than refueling, requiring careful planning. Battery replacement can be very expensive once the warranty expires.

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What Is Brake Fade – and How Dangerous Can It Be?

Brake fade refers to a condition where your car’s braking system loses effectiveness — a situation commonly described as “brakes not responding” or “brake pedal sinking”. This is highly dangerous as it leads to increased stopping distances or, in severe cases, the inability to slow down or stop the vehicle even when pressing the brake pedal all the way down. How to Recognize Brake Fade The brake pedal feels softer or sinks deeper than usual. You have to apply more force to get the same braking effect. The car doesn’t slow down as expected and continues to glide forward. You notice a burning smell near the wheels due to overheating of the brake pads or discs. Why Is Brake Fade Dangerous? Brake fade means losing control of the vehicle’s ability to stop. It typically occurs in these situations: Long downhill driving: Constant braking builds up heat in the system. Sudden hard braking at high speed: Puts intense, immediate load on the brakes. Overloading the vehicle: Increases braking demands beyond normal limits. Main Causes of Brake Fade 1. Friction Fade (Pad/Disc Fade) Occurs due to extreme and continuous friction between the brake pad and disc, generating high heat (typically over 400–500°C). At such temperatures, the brake pad material can break down and release gases that form a barrier between the pad and disc, greatly reducing friction. Symptom: The brake pedal still feels firm, but the car doesn’t slow down effectively. 2. Fluid Fade (Brake Fluid Fade) Heat from the brake discs and calipers transfers to the brake fluid. If the brake fluid has a low boiling point or has absorbed moisture over time, it can boil and create vapor in the brake lines. Symptom: The brake pedal feels soft or “spongy” and sinks almost to the floor, with minimal braking force. How to Prevent Brake Fade Keeping your braking system in optimal condition is critical for safety. Here’s what you should regularly check and replace: 1. Brake Pads Check pad thickness regularly. If the brake pad is 3 mm or less, it should be replaced immediately. 2. Brake Discs Replace discs if they are worn down to the minimum specified thickness. Overused thin discs lose heat dissipation ability and may crack. 3. Brake Fluid Change the brake fluid every 2 years or 40,000 km, whichever comes first. Brake fluid absorbs moisture over time, which lowers its boiling point and increases the risk of fluid fade. Brake fade is a serious risk that can compromise your safety. Regular inspection and maintenance of your brake pads, discs, and fluid are essential to ensure your vehicle can stop effectively — especially under heavy braking or tough driving conditions.

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5 Critical Warning Signs of a Failing Timing Belt

The timing belt is a critical engine component that synchronizes the crankshaft and camshaft to ensure the engine’s valves and pistons move in perfect harmony. If the timing belt becomes damaged or worn, it can cause severe engine failure—possibly requiring a complete engine rebuild. Here are 5 key warning signs that your timing belt may be in trouble: 1. High-Pitched or Unusual Engine Noise Unusual sounds, such as squealing or whining from the engine, often come from a loose timing belt or worn belt teeth. If you hear this, don’t wait — get it checked by a technician immediately. 2. Hard Starting or Engine Doesn’t Start If the timing belt slips or fails, the engine timing becomes misaligned, making the car hard to start — or unable to start at all. 3. Engine Vibrations or Rough Idling When the belt no longer accurately controls the opening and closing of valves and piston movement, it can cause the engine to run unevenly or vibrate abnormally. 4. Engine Overheating A damaged timing belt can interfere with the cooling system, especially if it powers the water pump. This may lead to coolant circulation failure and excessive heat buildup in the engine. 5. Check Engine Light Turns On Modern vehicles use sensors to monitor the crankshaft and camshaft timing. If the timing is off, the Check Engine light may illuminate. This is a sign that your car needs immediate inspection. ✅ Timing Belt Maintenance Tips Follow your vehicle’s recommended replacement interval, usually between 95,000 – 160,000 kilometers. Check the belt tension regularly — avoid belts that are too loose or too tight. Prevent fluid leaks, such as oil or coolant, from contacting the belt, which can weaken the rubber material. Pay attention to unusual sounds — if something doesn’t sound right, get it checked right away.