What is the function of the d block of the Accord?

The function of D gear of Pacific Auto Network Accord is forward gear. When the vehicle moves forward, the gearbox and the computer with supporting mechanical structure can automatically select reasonable gears in real time, and manual gear shifting is eliminated through manual intervention, which greatly liberates the driver's hands and feet and improves driving safety.

Accord d3 gear is to control the speed within the third gear, that is, the gear is limited to 1 to the third gear, and will not automatically shift up. The advantage of d3 is its fast reaction speed when overtaking. If you directly pull in D3 gear, you can directly shift to 3rd gear. At this time, the response speed is the fastest, and the vehicle will speed up instantly. After speeding up, it can be pushed to D gear. On the general road, the speed is below 40km/h, and different gears can't be distinguished. When the speed exceeds this speed, the engine speed will increase, and the normal gear should be adjusted below 2500 rpm, but D3 can be kept above 3000 rpm. D3 is the driving gear, which is basically the same as D gear except that it only changes between the first three forward gears. But when driving, you must pay attention to the maximum speed allowed in the third gear to avoid damaging the engine. Function of diaphragm of waste gas valve: 1. The engine control computer controls the solenoid valve to open in time according to the engine speed, load throttle opening, temperature, intake flow and exhaust temperature; 2. Air from the intake pipe enters the vacuum diaphragm chamber of EGR valve through the solenoid valve, and the diaphragm pull rod opens the EGR valve. A small amount of exhaust gas enters the intake system through EGR valve, and enters the cylinder to participate in combustion after mixing with mixed gas.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)