As we all know, Toyota actually controls Aisin, so almost all Toyota models adopt Aisin's automatic gearbox.
The 1 car equipped with 4AT in the world is the Toyota Crown of 1978. Then, its love letter 6AT is also known in the market. The best gearbox? .
Volkswagen in Germany and General Motors in the United States all use this gearbox, and even the Red Flag of Di Zi, which is worth 5 million yuan, is almost completely independent? Research and development? But the gearbox still needs Aisin.
Simply put, Toyota's Aisin gearbox is the strongest patent wall in the AT gearbox industry.
Honda tends to develop its own gearbox.
Honda's gearbox is a product of technical house, which is a bit biased.
Honda's successive presidents are actually from the technical department. Corporate culture is dominated by engineers, completely controlled by technology and obsessed with technology.
Just as Steve Jobs' Apple pays more attention to innovation, Cook's Apple pays more attention to revenue. In fact, because of the different positions and backgrounds of the two executives, the governance style of the whole enterprise will be different.
Honda has no technical accumulation in the gearbox field, unlike the other two Japanese brothers, Toyota has Aisin and Nissan has Gatco.
Honda has no reliable younger brother, the mainstream AT gearbox, and the patent wall is too high to climb. But with the spirit of engineers, Honda just bypassed the patent wall.
Honda took a different approach and developed an 8-speed dual clutch.
As we all know, the biggest technical problem of AT gearbox is actually the planetary gear set. Since it can't be used, Honda will try to take it off for you and put more clutches instead.
I use five clutches in 5AT and six clutches in 6AT, which makes the original AT gearbox with only 65,438+0 shafts become a three-axis parallel shaft gearbox.
But also because of this structure, there are more and more clutches and the size of the gearbox is getting bigger and bigger. Honda, the home of technology, was dumbfounded when others were already using 8AT and 9AT. Are you trying to support me to death? ?
So Honda felt that this road couldn't work, so it started again, just like a Frankenstein. On the basis of 6AT, a 1 8 speed dual clutch for hydraulic torque converter is developed.
Although this scheme solves the problem, it also loses the characteristics of small power loss and fuel saving because of the hydraulic torque converter, which seems to be a bit like robbing Peter to pay Paul.
The engine Honda has a slight advantage.