What does VVTI mean?

Should the Mistra use 92 or 95 octane gasoline?

The naturally aspirated 1.8L Mistra engine uses 92 octane gasoline, while the 1.6T turbocharged engine requires 95 octane gasoline. These gasoline grades are officially recommended in the vehicle's user manual. In addition to checking the appropriate gasoline grade in the user manual, the Mistra's fuel tank cap will also indicate the recommended grade. Typically, the gasoline grade can also be determined based on the engine's compression ratio. Vehicles with an engine compression ratio between 8.6-9.9 should use 92 octane gasoline, those between 10.0-11.5 should use 95 octane, and higher compression ratios may require 98 octane. However, with the use of new technologies, the compression ratio alone cannot determine the required gasoline grade, as high-compression engines can sometimes be tuned to use lower-octane gasoline. Other factors, such as ignition timing, turbocharging technology, and Atkinson cycle technology, also play a role. Generally, higher gasoline grades have higher octane ratings and better anti-knock properties. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. If the Mistra occasionally uses the wrong gasoline grade, simply switching back to the correct grade after use is sufficient. However, prolonged use of the wrong grade can have the following effects: For vehicles designed for lower octane, using a higher grade will not cause damage, but the increased octane rating can alter the fuel's ignition point, leading to delayed combustion. This reduces the engine's power output and thermal efficiency, resulting in poorer performance. For vehicles designed for higher octane, using a lower grade can cause engine knocking. The significantly lower octane rating reduces the fuel's ignition point, causing premature ignition during the compression stroke. If combustion occurs before the spark plug fires, resistance is created during the upward stroke. This resistance makes the engine run very unevenly. Mild knocking may only increase noise without obvious engine damage, but severe knocking indicates serious engine issues, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, potentially leading to cylinder scuffing.

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Can I reduce points through traffic law study with outstanding traffic violations?

To reduce points through traffic law study, your driver's license must first have accumulated points. This means if your license has no points deducted, you cannot participate in point reduction through study. Checking your violation records does not qualify for point reduction through study; you must ensure all violations are processed, as outstanding violations also disqualify you. Additional information: Definition of point reduction through study: It is an activity that rewards drivers for studying traffic regulations by reducing their penalty points. This initiative has been well-received, as it not only enhances knowledge of traffic laws and improves theoretical driving skills but also naturally leads to fewer violations.

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What should the engine ignition advance be in degrees?

Engine ignition advance should be between 6 to 12 degrees. The ignition advance angle refers to the crankshaft rotation angle from the ignition moment until the piston reaches the top dead center of compression. The ignition advance angle that enables the engine to achieve optimal power performance, fuel economy, and emissions is called the optimal ignition advance angle. The main factors affecting ignition advance are engine speed and the combustion speed of the air-fuel mixture. As engine speed increases, the time required to rotate through the same angle decreases, requiring a larger advance angle to achieve the corresponding advance time. The combustion speed of the air-fuel mixture is related to mixture composition, engine design, and other factors.

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Why does the fault light come on after replacing the car battery?

The issue is caused by a malfunction in the battery charging controller. Here is the relevant information: 1. Solution: If the battery charging controller is faulty, promptly visit the car's 4S shop or a repair shop to inspect or replace the battery charging controller to resolve the battery issue. 2. Battery discharge: The car battery light may come on primarily due to battery discharge, especially in cars that have been left unused for an extended period. Discharge is a common occurrence in such cases. Simply starting the car engine will directly drive the alternator via the belt, and the generated electricity, after rectification and voltage stabilization, will directly charge the car battery.

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How to set the memory seat for the Atenza key?

Atenza key memory seat setting method: After adjusting the seat, press SET, then press 1 or 2 to memorize after hearing a beep, or press SET and then press the unlock button on the key to memorize. After unlocking and opening the door, it will start adjusting to the desired position within 40 seconds. If the last memory point has not been adjusted, you will only hear a single beep and the seat will not move. The Atenza is a mid-size car launched by FAW Mazda, with body dimensions of 4870mm in length, 1840mm in width, and 1450mm in height, and a wheelbase of 2830mm. It is equipped with 2.0L and 2.5L naturally aspirated engines.

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What Causes Shaking During Semi-Clutch Start in Trucks?

Truck shaking during semi-clutch start is caused by poor cylinder combustion and low ignition energy. The following are specific analyses: 1. Poor cylinder combustion: The fundamental reason for truck shaking is poor combustion inside the cylinder. Poor combustion results in insufficient power output, leading to vehicle shaking. 2. Low ignition energy: When the engine temperature is too low, the temperature of fuel and lubricating oil will also be insufficient. The larger the spark plug gap, the smaller the ignition energy. At low temperatures, fuel atomization is poor, requiring higher ignition energy. When the spark plug gap increases, it leads to decreased ignition energy, affecting power output and causing the vehicle to shake.

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What does VVTI mean?

Should the Mistra use 92 or 95 octane gasoline?

Can I reduce points through traffic law study with outstanding traffic violations?

What should the engine ignition advance be in degrees?

Why does the fault light come on after replacing the car battery?

How to set the memory seat for the Atenza key?

What Causes Shaking During Semi-Clutch Start in Trucks?

What to Prepare Before Applying for a Driver's License?

Which Direction Does the Car Radiator Fan Blow?

Can You Use a Bucket to Get Gas at a Gas Station?

Will I be notified if the subject one test appointment is unsuccessful?