This article relies largely or entirely on a single source. (April 2019) |
Toyota Motor Corporation's K series of CVT transmissions found in many Toyota models. They are a pushbelt style of CVT manufactured by Aisin.
| Toyota K CVT transmission | |
|---|---|
 | |
| Overview | |
| Manufacturer | Aisin |
| Also called | Super CVT-i |
| Production | 2000 - present |
K110/K111/K112 series (2000)
K110
The K110 was Toyota's first belt-type CVT and production began in August 2000. Toyota said that the transmission was both fuel-efficient and offered high driving performance. The K110 features a torque converter with a long-travel damper to help achieve quiet operation and improved fuel efficiency.
Applications:
- Toyota Opa – 2.0L (2000–2005)
- Toyota Allion, Premio, Wish – 2.0L (2001–2011)
- Toyota Voxy – 2.0L (2007–2011)
- Toyota Auris & Corolla Axio / Fielder
- Toyota Ractis & Sienta
- Toyota Vitz
K111
The K111 transmission is an improved version of K110 introduced in July 2004. The K111 adds neutral-gear control and acceleration linear control.
Applications:
- Toyota Noah, Voxy – 2.0L (2004–2007)
K112
The K112 transmission, introduced in October 2005, is a modified version of the K111 that is built to work with higher displacement 2.4L engines.
Applications:
- Toyota Alphard – 2.4L (2008–2017)
- Toyota Blade – 2.4L (2006–2011)
- Toyota Estima – 2.4L (2006–2017)
- Toyota Mark X Zio – 2.4L (2007–2011)
- Toyota RAV4 – 2.0/2.4/2.5L (2005–2011)
- Toyota Vanguard – 2.4L (2007–2011)
- Toyota Opa
K120 "Direct Shift" transmission (2018)
Toyota brands the K120 as the Direct Shift-CVT and includes a physical first gear (also known as a "launch gear") and nine additional simulated gears, for a total of 10. The launch gear is engaged when the car takes off from being stopped and transitions to the belt drive once the car picks up speed. The benefit of this system is that traditional CVTs tend to have low efficiency in lower gear ratios (creating a moment of sluggishness when starting from a stop).[1] Since belts are handling a more narrow band of gear ratios, belt angles and loads can be reduced, increasing shift speeds and offering a 6% improvement in fuel efficiency.[2] Production began in October 2018.
Applications:
- Toyota Corolla (E210) – 2.0L (2018–present)
- Toyota Camry (XV70) – 2.0L (2019–present)
- Toyota C-HR – 2.0L (2018–present)
- Toyota RAV4 (XA50) – 2.0L (2018–present)
K210 transmission (2002)
Achieve both high fuel efficiency and high powertrain performance through size and weight reductions and are perfect suited for vehicles in the 1.5- to 1.8-liter class. Production began December 2002. Later in February 2003 Toyota achieves fuel efficiency improvements through its Intelligent Idling Stop System developed by adding an electronic oil pump to the K210 belt-type CVT, ensuring excellent startup performance during engine restarts and producing class-leading fuel efficiency.
Applications:
K310/K311/K312 series (2006)
Achieve both high fuel efficiency and high powertrain performance through size and weight reductions and are perfect suited for vehicles in the 1.5- to 1.8-liter class. Production began in September 2006.
Current applications:
- Toyota Corolla (K311), Altis – 1.8L (2010–present)
- Toyota Corolla Cross (K311) – 1.8L (2020–present)
- Toyota C-HR (K312) – 1.2L (2017–present)
- Toyota Vios (K312) – 1.5L (2016–present)
- Toyota Yaris (K312) – 1.5L (2016–present)
Previous applications:
- Toyota Auris, Corolla, Rumion – 1.5/1.8L (2006-2011)
- Toyota Allion, Premio – 1.5/1.8L, IST 1.5L (2007-2011)
- Toyota Avensis – 1.8/2.0L (2008-2011)
- Toyota Isis, Verso (K311), Wish – 1.8L (2009-2011)
- Toyota Probox, Succeed – 1.5L (2010-2011)
| Low | O/D | Rev |
|---|---|---|
| 2.386 | 0.411 | 2.505 |
Final drive:
K410/K411/K41 series (2004)
K411
Achieves both high fuel efficiency and high powertrain performance through size and weight reductions. Designed for vehicles with engine displacements between 1- and 1.3-liters. Production began December 2004.
Applications:
- Toyota Belta
- Toyota Vitz
- Several other models
| Low | O/D | Rev |
|---|---|---|
| 2.4 | 0.43 | 2.505 |
Final drive:
K41A
A version of the K410 transmission with the differential shifted forward to maximize space the Toyota iQ, a compact city car that was engineered to maximize passenger space, while minimizing exterior length. Production began October 2008.
Applications:
K41B
Created by increasing the capacity of the K41A CVT, for 1.3-liter engines. Production began April 2009.
Applications:
K411
Based on the K410 and adopting a flex-start control mechanism for the first time in a Toyota CVT; Lock-up clutch actively activated during startup to run the engine in the most efficient operating region, thereby improving fuel efficiency. Production began December 2010.
Applications:
- Several models including Corolla, Auris, Vitz, Vios, Yaris, and Echo
See also
References
- ^ Zatz, David (2018-03-23). "Toyota's quiet transmission changes". Retrieved 2020-09-17.
- ^ "Direct Shift-CVT: A New Type of Continuously Variable Transmission". Toyota Motor Corporation Official Global Website (Press release). 2018-02-26. Retrieved 2020-09-17.