What tires are used on the Honda Odyssey?

What is the efficiency of a gasoline engine?

The efficiency of a gasoline engine ranges between 80% and 90%. Engine efficiency refers to the ratio of the thermal equivalent of the engine's effective power to the heat content of the fuel consumed per unit time, which is used to evaluate the economic performance of the engine as a heat engine. From the perspective of energy conversion, the efficiency of converting electrical energy into kinetic energy is the highest, reaching up to 100%, and is generated by non-quasi-static processes (friction losses). Currently, the efficiency of a gasoline engine is generally one-fourth to one-fifth that of an electric motor, i.e., around 20%. If the mechanical efficiency is taken as 0.85, the effective thermal efficiency of a gasoline engine is approximately between 20% and 35%; the effective thermal efficiency of a diesel engine ranges between 35% and 43%. Diesel engines experience gas leakage in areas such as the combustion chamber and cylinder seals. Changes in combustion chamber volume, such as replacing with a thicker cylinder gasket, intake efficiency (air filter clogging, turbocharger sticking, poor exhaust, camshaft wear, incorrect valve timing, intake pipe leakage, poor diesel engine cooling heating intake, etc.), fuel injection and mixing efficiency. Issues like carbon buildup jamming the injector, wear of the fuel pump plunger, decreased injector pressure, incorrect injection timing, etc.

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What is a Thrust Bearing?

Thrust bearings generally consist of two or more thrust washers and several rolling elements. Thrust bearings are also known as axial bearings. The following is an introduction to thrust bearings: 1. Thrust ball bearings: Thrust ball bearings are a type of separable bearing where the shaft washer, housing washer, cage, and ball assembly can be separated. The shaft washer is the ring that fits with the shaft, while the housing washer is the ring that fits with the bearing housing bore and has a clearance with the shaft. Thrust ball bearings can only withstand axial loads. Single-direction thrust ball bearings can only withstand axial loads in one direction, while double-direction thrust ball bearings can withstand axial loads in both directions. Thrust ball bearings cannot limit radial displacement of the shaft and have a very low speed limit. Single-direction thrust ball bearings can limit axial displacement of the shaft and housing in one direction, while double-direction bearings can limit axial displacement in both directions. 2. Thrust roller bearings: Thrust roller bearings are used to primarily withstand axial loads combined with radial loads, but the radial load must not exceed 55% of the axial load. Compared to other thrust roller bearings, this type has a lower friction coefficient, higher speed, and self-aligning capabilities. The 29000 series bearings feature asymmetric spherical rollers, which reduce relative sliding between the rollers and raceways during operation. These rollers are long, large in diameter, and numerous, offering high load capacity. They are typically lubricated with oil, though grease lubrication can be used in some low-speed applications. In design selection, priority should be given to these bearings. The 80000 series thrust cylindrical roller bearings, 90000 thrust tapered roller bearings, and AXK-type thrust needle roller bearings can withstand unidirectional axial loads. They have much higher axial load capacity than thrust ball bearings, greater rigidity, and occupy less axial space. Thrust cylindrical roller bearings and thrust needle roller bearings are suitable for low-speed applications, while thrust tapered roller bearings can operate at slightly higher speeds than thrust cylindrical roller bearings. 3. Thrust needle roller bearings: Thrust needle roller bearings can be considered a special type of thrust cylindrical roller bearing, where the length-to-diameter ratio (defined as the ratio of roller length to diameter) is significantly greater than 2. Therefore, the load capacity of thrust needle roller bearings is significantly lower than that of thrust cylindrical roller bearings of equivalent diameter. Thrust needle roller bearings are used in medium to low-speed ranges to prevent the adverse effects of sliding between the rollers and raceways. Thrust needle roller bearings can be complete bearing assemblies with thrust washers and roller cage components or simply needle and cage assemblies. The needles are hardened and precision-ground to ensure optimal load distribution.

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Will the Tire Pressure Monitoring System Alert Before a Tire Blowout?

Tire pressure monitoring is solely for supervising tire pressure and will only issue an alert when the pressure is too low or too high. Tire Pressure Monitoring Warning Light: The tire pressure monitoring indicator is a yellow symbol—an irregular circle without a seal on top, with four small spikes at the bottom and an exclamation mark inside. When the tire pressure monitoring indicator lights up, it indicates abnormal tire pressure. Abnormal tire pressure generally occurs due to one of the following three reasons: Abnormal Tire Pressure: Typically, an alert is triggered when the pressure is below 1.8 bar or above 3.0 bar. In such cases, tire inspection and pressure adjustment are necessary. Tire Pressure Monitoring Not Reset: After inflating the tires, if the tire pressure monitoring system is not reset promptly, it may still record the previous data, causing the tire pressure monitoring light to illuminate. In this situation, simply reset the tire pressure monitoring system. Damaged Tire Pressure Sensor: The tire pressure sensor, installed inside the tire and connected to the tire inflation valve, monitors tire pressure. If the sensor is damaged during driving (e.g., due to impact), the tire pressure warning light may also turn on. For sensor damage issues, the only solution is to replace it with a new component. What to Do If Tire Pressure Is Low: If no visible damage is detected, inflate the tire to normal pressure and reset the tire pressure system. If inspection reveals a puncture, drive to a tire repair shop promptly for patching, then reinflate the tire. If the low-pressure warning reappears some time after inflation without any puncture, it may be due to air leakage caused by a deformed wheel rim. In this case, inspect the rim and consider replacing it.

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What engine is equipped in the Geely Emgrand GS?

Emgrand's engine is a naturally aspirated engine, independently developed by Geely Automobile, so it belongs to a domestic engine. The engine model used in the Emgrand is JLY-4g15, with a maximum power of 80kW, maximum horsepower of 109, and maximum torque speed of 140N·m. For the daily maintenance of the Emgrand's engine, the following methods can be used: Use lubricating oil of appropriate quality grade. For gasoline engines, SD--SF grade gasoline engine oil should be selected based on the additional devices of the intake and exhaust systems and usage conditions; for diesel engines, CB--CD grade diesel engine oil should be selected according to mechanical load, with the selection standard not lower than the manufacturer's specified requirements. Regularly change the oil and filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, performance deteriorates, which can cause various problems for the engine. To avoid malfunctions, change the oil regularly according to usage conditions and keep the oil level moderate. When oil passes through the fine pores of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter is clogged and oil cannot pass through the filter element, the filter element may burst or the safety valve may open, allowing oil to bypass through the bypass valve, bringing contaminants back to the lubrication area, accelerating engine wear and increasing internal pollution. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal powder from component wear to form sludge. When the amount is small, it remains suspended in the oil; when large, it precipitates out of the oil, clogging filters and oil holes, making engine lubrication difficult and causing wear. Regularly use a radiator cleaner to clean the radiator. Removing rust and scale not only ensures the normal operation of the engine but also extends the overall lifespan of the radiator and engine.

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Can the car be started after the exhaust pipe is submerged in water and the water recedes?

Whether the car can be started after the exhaust pipe is submerged in water and the water recedes depends on the amount of water intake. If the car's exhaust pipe has a small amount of water, it will gradually be expelled with the exhaust gases as the vehicle continues to be used, without causing significant impact on the vehicle or the engine. If there is excessive water intake, it can affect the engine, causing it to stall during operation, so the car should not be started. Precautions for driving through waterlogged roads: Do not drive directly through the water; be aware of the safe wading depth for your vehicle model. Before entering the water, observe the route and speed of the vehicle ahead. Do not restart the engine after stalling. Flooded vehicles are categorized into six levels, with the impact on the vehicle ranging from light to severe: Flood Level 1: The water has just reached the vehicle's chassis, and the floor may become damp, but the probability of significant water intake is low, with minimal impact on the vehicle's electrical equipment. Flood Level 2: The water reaches halfway up the wheels. Due to the vehicle's incomplete sealing, water will begin to enter the interior. For lower sedans, the water level inside may affect the seat adjustment motors and electrical components such as heating and ventilation. Flood Level 3: The water completely submerges the tires. At this point, the water level inside will fully submerge the seat cushions and the central armrest area, affecting a large number of electrical components. Flood Level 4: The water reaches the engine hood. The water level inside rises to the dashboard, and the headlights and the engine's air intake pipe in the engine compartment begin to take in water. Flood Level 5: The water completely submerges the engine hood. All electrical components inside the vehicle will be affected. Flood Level 6: The water submerges the roof. The vehicle's ceiling and sunroof module will be affected, and no component inside the vehicle will be spared.

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Do You Need to Wait for a Red Light When Making a U-Turn at a Dotted Line?

If there is no U-turn signal light, a dotted line at the gap means the U-turn is not affected by the left-turn signal light and does not require crossing the pedestrian crossing. If the gap has a solid line, then the U-turn must cross the pedestrian crossing and is subject to the left-turn signal light. Making a U-turn directly may result in being photographed or penalized by on-site traffic police. If you need to cross the pedestrian crossing to make a U-turn, you must yield to pedestrians: When pedestrians are walking on the right side of the crosswalk and have not reached the centerline of the road, vehicles on the left side of the road should slow down and proceed safely to allow pedestrians to cross. If pedestrians are waiting outside the boundary between motorized and non-motorized lanes and have not entered the roadway, vehicles should slow down and proceed safely to allow them to cross the crosswalk. If pedestrians cross the dividing line between motorized and non-motorized lanes, vehicles failing to stop and yield are committing a violation and should be penalized. When pedestrians enter motorized lane A along the crosswalk, motorized vehicle B should slow down and proceed safely. If vehicle A does not stop and yield, it is a violation and should be penalized. If pedestrians waiting at the centerline of the road do not enter the vehicle lane, vehicles failing to stop and yield are committing a violation and should be penalized. If pedestrians cross the centerline of the road into the vehicle lane, vehicles failing to stop and yield are committing a violation and should be penalized. When pedestrians are separated by a median strip, vehicles must slow down and proceed safely if pedestrians are waiting in the median area. Cases where U-turns are allowed: If there is a U-turn sign at the intersection, a U-turn is permitted. If there is a U-turn signal light, follow its instructions. If there is no signal light, make a U-turn only if it does not interfere with other vehicles or pedestrians. If there is no explicit prohibition of U-turns or left turns, a U-turn is allowed. "No explicit prohibition" means the intersection has no "No U-Turn" or "No Left Turn" signs, and the centerline is not solid. U-turns are also allowed in yellow grid zones. Yellow grid lines indicate no-stopping zones, but vehicles can make U-turns there as long as there is no central barrier. If there is a U-turn signal light, follow its instructions—only proceed on green. If "No Left Turn" and "U-Turn Allowed" signs appear together, U-turns are permitted but left turns are not. Note that "No U-Turn" does not mean "No Left Turn." Things to note when making a U-turn at an intersection: Check the road markings—if they are solid lines, U-turns are prohibited under any circumstances. Continue driving to find a suitable location. If there is a "No Left Turn" sign, U-turns are also prohibited, even if "No U-Turn" is not explicitly stated, since U-turns involve left-turning movements. U-turns must be made from the innermost left-turn lane. If you are in the second left-turn lane, you cannot make a U-turn at that intersection. Always yield to straight-moving vehicles before making a U-turn. Failing to do so will make you fully liable for any accidents. Near the intersection stop line, lanes often have guiding arrows. The leftmost lane does not always have a left-turn arrow—if it has a straight arrow, U-turns are prohibited even without explicit signs.

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What tires are used on the Honda Odyssey?

What is the efficiency of a gasoline engine?

What is a Thrust Bearing?

Will the Tire Pressure Monitoring System Alert Before a Tire Blowout?

What engine is equipped in the Geely Emgrand GS?

Can the car be started after the exhaust pipe is submerged in water and the water recedes?

Do You Need to Wait for a Red Light When Making a U-Turn at a Dotted Line?

What Does the Pushing Sensation in a Car Mean?

Does Nissan's first maintenance not require an oil change?

Can a car be fitted with a second-hand engine?

Will adding 1 liter of diesel to a gasoline car have any impact?