On the basis of the second generation, DM3 has added a high-performance BSG engine, which is economical and pure while maintaining strong performance. The re-evolution of DM3 can not only meet the needs of overtaking or high speed of car owners, but also take into account the economy of commuting with low fuel consumption every day, and spend the same money to meet various performance requirements, which is the reason for the success of BYD's hybrid sales.
Original Breakthrough —— In-depth Analysis of BYD High Performance BSG Vehicle
The full name of BSG is belt drive? Starting? Generator, as can be seen from the English name, is an all-in-one machine with synchronous start and development of belt drive. The application of BSG motor has obvious efficiency, economy and stability. The BSG motor is located at the front of the engine. According to the names of motors at other positions in the engineering field, BSG motor is located at P0 position. On the third-generation DM technology, BYD innovatively added a high-power BSG motor at P0, realizing the three-engine four-wheel drive structure of P0, P3, P4 and P4, with five driving modes to choose from.
High efficiency "BSG generator"
The maximum power of BSG motor in DM3 system is 25kw, which is about 60% higher than that of ordinary BSG motor. The power of BSG motor is not for driving, but for obtaining higher power generation efficiency. Especially in the low-speed driving during the rush hour in the city center, before installing BSG motor, the development efficiency of hybrid power system increased by 265,438+0%.
In the hybrid power system without BSG motor, the whole motor must have both driving and developing functions. The power generation efficiency is directly related to the speed of the front wheels. When driving at low speed, the front wheel speed is very low, so the power generation efficiency is low, and the energy generated by the engine is not effectively utilized.
With the addition of BSG, DM3 system can use "series hybrid power" and other driving forms at low speed and traffic jam. When the clutch is disconnected, the engine does not directly participate in driving the vehicle, so the engine speed can be controlled within the most economical speed range. Drive the BSG motor to charge the power battery and provide the power battery to the motor, so as to maximize the efficiency of the engine and the development efficiency of the BSG motor.
"BSG speed regulator" greatly improves the ride experience. Original Breakthrough —— In-depth Analysis of BYD High Performance BSG Vehicle
The BSG motor is located at the front end of the engine and connected with the engine through belt drive. When the belt is flexibly connected with the driving power, it will not produce mechanical vibration. The BSG motor can also adjust the engine speed, which greatly improves the ride comfort of the vehicle in stopping, starting, idling, shifting and accelerating.
In the process of starting, BSG motor can quickly increase the engine speed, which is a partial reburning beyond low-speed jitter, greatly improving the smoothness of engine starting. In the process of lifting, BSG motor can increase the engine speed through belt transmission, or reduce it to the speed matching with gears, and adjust the engine speed through BSG motor to improve the stability of speed change.
Simple "BSG Starting Motor" System
The BSG motor of DM3 system has the function of starting motor, but the typical low-voltage starting motor needs extra starting battery for power supply. The working voltage of BSG motor in DM3 system is 360V-5 18V, which can be directly supplied by power battery, without additional starting battery and corresponding charging equipment and circuits. The layout of the whole system is simpler and more efficient.
BYD in pursuit of perfection? DM system
With the addition of high-power BSG motor, BYD DM system no longer pursues high power and high performance, but pays more attention to economy and purity while maintaining performance, and captures consumers' feelings more carefully, so the sales of DM3 series vehicles are further improved.
The 100km of the new generation of party DM has been accelerated to an astonishing 4.3s, and the cruising range of pure electric vehicles is 100km, which can meet daily commuting. The comprehensive fuel consumption of the Ministry of Industry and Information Technology is 65,438+0.6 liter/65,438+000 km, and the ride comfort and NVH of vehicles have been greatly improved. This extremely high face value, strong dynamic performance, low fuel consumption and quiet car environment really make people want to take it home.
BYD DM system's pursuit of perfection will not stop there, and it has made great progress on the road of pursuing more economy. From the Etkinson engine of BYD booth in Shanghai Auto Show, it can be seen that BYD's fourth-generation DM technology has gone up a storey still higher on the economic road, and it is endless exploration.