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Common cars usually switch gears at 2000-3000, but the first gear is often lower, and 2000 rpm or a little more than 2000 is OK. Some are low-speed engines, that is, they can burst out relatively large torque and power at low speeds, and such engines can shift gears around 2000 rpm, or even 1500 to 1800 rpm.
The torque output of non-turbocharged engines starts to reach more than 80% from above 2,500 rpm, so if you want to maintain power, you have to maintain a speed shift of 2,500-3,000 rpm, which of course consumes a lot of gasoline. In the turbocharged engine, basically 2000 rpm can release more than 90% of the torque output, so the turbocharged engine can shift gears at 2000 rpm.
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Guangzhou Honda's eighth-generation Accord 5-speed automatic transmission gently twists the intelligent ignition switch, the instrument light lights up, starts the engine, sits in the car without feeling a trace of vibration and almost no noise, dials the gear lever to the "D" gear position, lifts the brake pedal to start, the power after the start is still smooth and linear, the ratio of throttle travel and power release is moderate, easy to master. The excellent horsepower and torque figures are fully revealed when the throttle is pressed deeply, and with the tacit cooperation of the 5-speed automatic transmission, the acceleration response is agile and calm, and it has the feeling of a high-end luxury car. Test drivers have commented that the transmission of the eighth-generation Accord is very "smart" and the gear changes are quite smooth.
Thanks to the hill control function, all unnecessary gear changes are reduced when going up and down hills and corners. During the test drive, we fully experienced the advantages brought by this design, and the power was still agile and smooth when we stepped on the accelerator frequently, which greatly reduced the frustration of traditional automatic transmission models during intense driving.
According to the torque distribution diagram, the maximum output distance of this engine occurs at 4500r rnin, and after 2000r min, it can continuously output more than 180Nm of torque. The eighth-generation Accord is very smooth, which is inextricably linked to its wide body. Press the accelerator pedal deeply, and the specially treated engine roar is heard in the ears and is not offensive.
On the contrary, it adds some driving pleasure, at this time, the driving computer adjusts the timing of shifting, and the transmission shifts around 4000r min, and it begins to have a noticeable feeling of pushing back. The test driver deliberately chose some of the sharper corners, which was a big test for the cornering performance of the eighth-generation Accord, maintaining a high speed to corner, and the tires rubbing against the ground were issued"Squeak"sounds. The steering wheel is very precise and there is no significant roll, which is very satisfying, and the eighth-generation Accord's excellent cornering performance is due to its excellent chassis and relatively low center of gravity. Reference.
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09 yearsHonda AccordThe automatic transmission is four-speed. 09 Accord belongs to the eighth generation Accord. From the fifth generation to the eighth generation, the Accord is equipped with a 4AT gearbox, and Honda's exclusive inline gear lever has been passed down from the fifth generation model to the present.
Whether it is the materials, design or reliability, the Accord four-speed transmission is a classic and more representative of Honda's conscience.
09 Eight generations Accord D file usage
D gear is one of the most common gears in automatic transmission models, and it belongs to a type of forward gear, which covers the car's automatic transmission.
All numbers of forward gears within it. When the shift control lever is placed in D gear, the hydraulic system control automatically switches on the corresponding forward band according to the throttle opening signal and the vehicle speed signal. Planetary gears.
Transmission, dual clutch.
The transmission system or the continuously variable transmission belt transmission system will obtain the corresponding transmission ratio under the control of the actuator.
With the change of the output shaft and engine speed, it automatically rises and lowers to the appropriate gear in the forward gear, and realizes the automatic transmission function.
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The '09 Honda Accord automatic transmission is a four-speed. 09 Accord belongs to the eighth generation Accord. From the fifth generation to the eighth generation, the Accord is equipped with a 4AT gearbox, and Honda's exclusive inline gear lever has been inherited from the fifth generation model to the present, and this transmission has no other problems except for oil leakage.
Whether it's materials, design or reliability, the Accord four-speed rough Zen transmission is a classic that better represents Honda's conscience.
09 Eight generations Accord D file usageThe D gear is one of the most common gears in automatic transmission models, and it is a type of forward gear, which covers all the number of forward gears in the car's automatic transmission. When the shift lever is in D gear, the hydraulic system controls automatically switch to the corresponding forward band based on the throttle opening signal and the vehicle speed signal. Planetary gear transmission system, dual-clutch transmission system or continuously variable transmission belt transmission system will obtain the corresponding transmission ratio under the control of the rock holding round dust mechanism, and automatically lift to a suitable gear in the forward gear with the change of the output shaft speed cavity chain and engine speed, so as to realize the automatic transmission function.
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What is the reason for the sudden increase in rev speed while driving in automatic transmission?
The reason for the sudden increase in the speed of the automatic transmission: the engine speed is too low and the torque is insufficient, and the electronic control program is improving the torque output of the engine to prevent the flameout, but the brake is not stepped on, and the computer automatically thinks that it is not to slow down, but the engine torque is insufficient. In order to maintain the original speed, the gearbox was changed to a low gear to increase the torque output, and the gear was lowered and the speed of the car did not change, and of course the engine speed was increased.
It is generally a matter of delay to know that the engine speed and the torque of the gearbox are synchronized. If the engine speed goes up, the speed is not up, obviously the transmission torque can not keep up, check the transmission oil, check the transmission clutch plate for ablation, slippage, and check the hydraulic shifter.
In this case, the first consideration should be whether it is caused by external factors, such as the selected gear is too low, the hand brake handle is not lowered to the bottom and driving, etc. If the external factors are normal, you can use the diagnostic instrument to check whether the transmission computer and the engine computer are faulty, and if there is a fault, you can first repair it according to the fault prompt; If there is no fault, you can check whether the oil level and oil quality of the transmission meet the requirements, the oil level is too low or too high is easy to cause the oil pump to suck air and make the lubrication poor or the action is not in place to slip, if the oil quality, the code to eliminate the oil level meets the requirements, it should generally be suspected whether there is a problem with the torque converter and the transmission.
If the engine revs too high when shifting, you should release the throttle and reduce the revs immediately, wait a few moments before shifting.
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The automatic transmission is hung to the D gear, and the manual transmission is pressed on the clutch.
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The speed of the ninth-generation Accord car is generally 1100 at the beginning of the ignition, and then drops to 800 to 900 after a while.
The law of conservation of energy explains: when the cold car starts, because the temperature of the engine, crankcase, piston and oil is only room temperature, far less than 90 degrees of the optimal working temperature of the engine, a large part of the energy of gasoline ** is converted into the heat energy of the above parts, that is, the above parts are heated in vain. In order to maintain the four-stroke cycle of the normal speed of the engine, the whole system must increase the amount of fuel injection and increase the energy of gasoline ** to offset the loss of this part of the energy, so the engine speed will be relatively high, when the temperature of the whole system is close to normal, the energy of gasoline ** does not need to be too high, the amount of fuel injection decreases, and the speed naturally goes down.
In layman's terms, if the total value of normal energy release is 10, the energy required for the normal operation of the engine is 4, and the energy lost when the car is cold, then the system should increase the amount of fuel injection, so that the energy can only work normally when the energy is 12, and when the system temperature is normal, the loss of energy is reduced to 6, then the normal amount of fuel injection can meet the requirements, and the speed will come down.
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There is no need to warm up in winter, and you can drive after starting and waiting for the engine speed to drop down.
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1. Find the "sound" button on the audio air conditioning panel of the center console, and there is a clock (time) mark below this button; Press and hold "sound" and hear a sound of "di", and the time on the LCD will flash;
2. Then press the "4" key (there is the letter h below) to adjust the "time", press the "5" key (the letter M below) to adjust the "minute", press "6" to make the point change to "00";
3. After adjusting to the correct time, press the "sound" button again, the time does not flash, and it is done.
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2.Press the menu switch button on the left side of the vehicle's steering wheel to bring up the time adjustment function;
3.Press the RES and SET buttons on the right side of the steering wheel to adjust the time display;
4.Press the Enter button on the left side of the steering wheel to confirm the time setting.
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How to adjust the time of Accord VIII:
Find the "sound" button on the middle audio air conditioning panel (in fact, there is a clock (time) mark below this button), and then press and hold it, hear the "di" sound, the time on the LCD will flash, and then press the "4" key (there is the letter h below) to adjust the "time", press the "5" key (the letter m below) to adjust the "minute", press "6", you can make the minute change "00", adjust to the correct time, and then press the "sound" button, the time does not flash, That's it.
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The method of adjustment is: find the "sound" button on the middle audio air conditioning panel (in fact, there is a clock (time) mark below this button), and then press and hold it, hear a "di" sound, the time on the LCD will flash, and then press the "4" key (there is the letter h below) to adjust the "hour", press the "5" key (the letter m below) to adjust the "minute", press "6", you can make the division change "00", adjust to the correct time, and then press the "sound" key, If time doesn't flash, it's done.
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Different models, the operation of adjusting the time must have differences in details. Therefore, I highly recommend that you look through your car's instructions and owner's manuals. There will be a detailed ** explanation and description inside.
You can follow the instructions in the manual to set it up step by step. Because the time adjustment method of different models is different from the adjustment method of your car.
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The Honda eighth-generation Accord transmission is a CVT gearbox, the manual transmission is a 6-speed, and the automatic transmission is a 5-speed
1. Compared with the traditional AT gearbox, CVT can improve the fuel economy and power of the vehicle, improve the driver's maneuverability and ride comfort, and make the acceleration more stable;
2. Because there is no transmission gear of the AT gearbox, there is no corresponding gear shift, and of course, the frustration is gone, so the power output of the CVT gearbox is linear, and it is very stable in actual driving;
3. Because of this, the mechanical efficiency and fuel-saving performance of CVT transmission are much better than those of ordinary automatic transmissions, and the fuel economy is also much better.
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