When it comes to Toyota's HEV hybrid system, it plays an important role all over the world. According to statistics, from 1997 to the present, Toyota's various hybrid models have accumulated sales of more than 18 million vehicles in the world, allowing more consumers to experience the low fuel consumption and better power performance brought by the hybrid system.
So, what are the technical advantages of the new generation of HEV hybrid system that will be launched on August 27, 2021? The TNGA 2.5L hybrid system is energy efficient and energy efficient
With the blessing of the TNGA architecture, Toyota's new-generation HEV hybrid system is composed of a TNGA 2.5L Dynamic Force engine and a new generation of three-electric system (that is, the fourth generation of high-efficiency nickel-metal hydride batteries, the fourth generation of high-speed motors, and the fourth generation of power control unit PCU), and efficiently integrates the engine, electric motor, and battery to work together to achieve smooth driving control and a comfortable driving experience.
Among them, the TNGA 2.5L Dynamic Force engine, through the use of laser clad valve seat technology, D-4S high-pressure in-cylinder direct injection, low-pressure manifold injection composed of hybrid injection system, VVT-iE intelligent electric variable valve timing intake system and other technologies, to achieve 41% of the world's thermal efficiency, in the fuel economy and power strength of the excellent balance between fuel economy and power strength.
As an important part of the hybrid system, the new generation of three-electric technology has made progress in miniaturization and lightweighting, and has also been further optimized in performance.
Among them, the fourth generation of nickel-metal hydride batteries not only prolongs the service life, but also reduces the volume of the battery pack by 67% by improving the electrode material, and improves the input and output performance of the battery, so that the vehicle has better acceleration performance.
As one of the power sources of the vehicle, the motor can be turned on by means of high speed, high voltage and improved coil groove full rate, so that the output power of the motor is 4.2 times, and the motor responds quickly, even in the extremely cold environment can be started instantaneously in 1 second, without waiting.
As the power control unit of the entire hybrid system, the PCU plays an important role in the process of vehicle starting, acceleration and deceleration and charging. Toyota's fourth-generation PCU adopts the world's first double-sided laminated cooling structure, which allows the PCU to maintain a stable working state under any circumstances, enabling free switching between power and power.
At the same time, the system uses motor brakes, which not only ensures the safety of driving, but also recovers the energy generated during the braking process for battery charging, truly efficient energy storage is more environmentally friendly. Therefore, the blessing of the new generation of HEV hybrid system allows the vehicle to indulge in a tank of oil for thousands of miles.
"Hybrid artifact" PSD Toyota stands tall in the field of hybrid magic
Of course, in addition to the TNGA 2.5L engine with a thermal efficiency of up to 41% and the fully optimized three-electric technology, Toyota's new-generation hybrid system is the PSD (Power Split Device Power Distributor), which is called the "Hybrid Artifact".
Since the patent application in 1997, the technology has established Toyota's supremacy in the field of hybrids. Its core component planetary gear set is composed of three parts: sun wheel, planetary gear and gear ring, which seamlessly and effectively distributes power through planetary gears, realizing the free switching of HEV models in three modes of oil, electricity and oil-electric hybrid, with simple structure and stable and reliable performance.
Compared with other hybrid systems that use clutch structure for power transmission, PSD can adjust the different speeds of each component through the precise control of the PCU, and realize the infinite speed change and power output input, and the flexibility of smoothness and speed change is difficult to replace by the hybrid system of other structures.
On the whole, the renovation of the Crown brand not only makes the performance of the vehicle comprehensively improved under the TNGA architecture, but also the installation of the new generation of HEV hybrid system, which also makes the Crown land under the crown brand greatly reduce carbon dioxide emissions under the same circumstances, and in urban transportation, the fuel-saving effect is more significant. And this will also become one of the big advantages of crown land release