Re: Toyota Announces New, More Efficient Engines (MCT_MR2)

Sun, 04 May 2014 22:09:30 GMT

Im still curious what happened with toyota's valvematic engines, which were apparently super efficient using constantly variable lift and duration to control engine speed and power instead of a throttle. They could go from 107°@1.1mm up to 264°@11mm lift.

Re: Toyota Announces New, More Efficient Engines (Knightrous)

Wed, 30 Apr 2014 13:17:02 GMT

One thing I want to see is the development of some turbo diesel hybrids, considering there are quite a few turbo diesel motors that already do 4L/100KM.

Re: Toyota Announces New, More Efficient Engines (Eric)

Wed, 30 Apr 2014 11:28:35 GMT

Would be nice for the daily drive!

Extra cash to spend on the 2! :P

Toyota Announces New, More Efficient Engines (Ray-MR2)

Wed, 30 Apr 2014 11:14:44 GMT

Your next Toyota could be 10 percent more efficient than what’s currently on sale thanks to a slew of new engine technologies the Japanese auto giant just announced.

The series of newly-developed, highly fuel-efficient engines achieve improved thermal efficiency. Toyota says the small powerplants leverage combustion and loss-reduction technologies it refined through its hybrid powertrains. The company expects that the new engines will achieve fuel-efficiency improvements of at least 10 percent over current vehicles. Though it’s unclear whether they’ll be making it into Australian models, the new engines will be rolled out in the near future in vehicles scheduled for partial redesign. A total of 14 new engine variations will be introduced globally by 2015.
One of the engines Toyota has announced is a 1.3-liter unit that employs the Atkinson cycle, technology that is found in the brand’s dedicated hybrid powertrains. Other innovations designed to enhance fuel economy in the 1.3-liter include an intake port with a new shape that generates a strong tumble flow and a cooled exhaust gas recirculation system paired with intelligent electric variable valve timing. Compared to current vehicles, the 1.3-liter is capable of approximately 15 percent better fuel economy.
The other powerplant shown is a 1.0-liter jointly developed with Daihatsu. It features technology similar to the 1.3-liter and when combined with idling-stop functionality, a maximum fuel efficiency improvement of approximately 30 percent is possible.