|President Watanabe’s plug-in hybrid slide from his talk to the Environmental Forum|
In a speech to the Toyota Environmental Forum, Toyota Motor (TMC) President Katsuaki Watanabe today outlined a set of development initiatives for the next four-plus years designed to augment the Toyota portfolio of technologies supporting sustainable mobility.
While he touched on enhancements to its conventional gasoline line-up and described a measured approach to flex-fuel vehicles, he was more aggressive in its discussion of its hybrid work—bringing Toyota the closest yet of any major automaker to making a commitment to plug-in hybrids.
Toyota’s three main technology goals as articulated are:
Improving fuel efficiency to reduce emissions of CO2;
Making exhaust emissions cleaner to help abate atmospheric pollution, and;
Pursuing energy diversification to limit the use of fossil fuels, particularly that of petroleum.
Conventional powertrains. Toyota plans to completely revamp its gasoline engine and transmission lineup by 2010 in an effort that began with the development of a new type of V-6 engine in 2003. As part of this effort, Toyota developed a new version of its 1.8-liter gasoline engine and continuously variable transmission that will become the main powertrain for Toyota compact and mid-size passenger vehicles.
The new 1.8-liter uses Dual VVT-i (Variable Valve Timing-intelligent) to enable continuous control of optimum valve timing for various engine speeds and loads. The engine will provide one of the best torque-strong performances in the 1.8-liter class, according to Toyota.
Toyota will use of ultra-light pistons, along with efforts to reduce friction loss among parts such as by using roller bearings in the rocker arm valve train, to achieve a targeted 5% improvement in fuel efficiency compared to earlier engines and to achieve clean exhaust emissions (equivalent to 75% lower than the maximum allowed by 2005 emissions standards).
As a target for 2010, TMC aims to achieve emissions levels that are 75% lower than the 2005 emissions standards and to exceed the level called for by the Japanese 2010 fuel efficiency standards by 10% or more for most passenger vehicles.
Hybrids and plug-in hybrids.Toyota will double the number of hybrid models it offers by the early years of the 2010s.
Watanabe also said the company is advancing its research and development of plug-in hybrid vehicles. Toyota is currently working on a next-generation vehicle that it says can extend the distance traveled by the electric motor alone and that is expected to have a significant effect on reducing CO2 and helping to abate atmospheric pollution.
For the autombile to survive as a sustainable means of mobility for the 21st century, we must push forward with the understanding that the greatest risk is not taking up the challenge of change.—Toyota President Katsuaki Watanabe
Flex-fuel vehicles. Toyota says that it has all the technology necessary to allow all TMC engines to run on E10 blends. Toyota will introduce E100-capable flex-fuel vehicles to the Brazilian market in the spring of 2007. For the US, Toyota is “considering” introducing flex-fuel vehicles in consideration of policies to promote bioethanol fuels.
Fuel cells. Toyota will continue its work on fuel-cell passenger vehicles.
|TMC 1.8-liter Engines|
|Engine model||2ZR-FE (new model)||1ZZ-FE (previous model)|
|Engine type||In-line 4-cylinder DOHC-16 valve
Dual VVT-i (intake and exhaust)
|In-line 4-cylinder DOHC-16 valve|
|Bore x stroke [mm]||80.5 x 88.3||79.0 x 91.5|
|100 (134)/6,000||97 (130)/6,000|
(10-15 cycle) [km/l]
|5% or higher better than conventional||16 (38 mpg US)|
President Katsuaki Watanabe addressing the Toyota Environmental Forum