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News Toyota Develops World's Most Thermally Efficient 2.0-Liter Engine

15:05  11 march  2018
15:05  11 march  2018 Source:   msn.com

Behold This Insane V12 Made From Two Toyota 1JZ Engines

  Behold This Insane V12 Made From Two Toyota 1JZ Engines Modifying Toyota Supra engines is all fun and and good, but that gets done a lot. Modifying Toyota Supra engines is all fun and and good, but that gets done a lot. A tuning shop in Minnesota refreshingly didn’t go that typical route, instead combining turbocharged six-cylinder engines pulled from two Supras and combining them into a V12.

a close up of a motorcycle© Toyota

The biggest problem with the internal combustion engine is that most of the energy generated by combustion is wasted as heat rather than converted propulsion for the vehicle. Toyota's new Dynamic Force Engine has made a breakthrough in thermal efficiency in being 40 percent efficient as a conventional engine and 41 percent efficient in hybrid form. Most internal combustion engines are only 20 percent thermally efficient, according to Green Car Reports.

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In addition to heat, the various systems required to run the engine all take energy that could potentially be put to use propelling the vehicle. In the Dynamic Force Engine, the sides of the pistons have been polished to a smooth mirror surface to reduce friction, with narrow grooves cross cut in it to improve scuff resistance. The cylinder head has been designed with a high-efficiency intake port. A high-power ignition coil is used to burn every last droplet of gas from the multi-hole direct injector. This engine uses a new version of Toyota's D-4S direct injection system, which has already been used on the Toyota 86 and Subaru BRZ twins for years.

Behold This Insane V12 Made From Two Toyota 1JZ Engines

  Behold This Insane V12 Made From Two Toyota 1JZ Engines Modifying Toyota Supra engines is all fun and and good, but that gets done a lot. Modifying Toyota Supra engines is all fun and and good, but that gets done a lot. A tuning shop in Minnesota refreshingly didn’t go that typical route, instead combining turbocharged six-cylinder engines pulled from two Supras and combining them into a V12.

a close up of a map© Provided by TIME Inc.

Besides the obvious benefit of improved fuel economy, another major benefit of this engine is its enhanced torque. Not only does it produce more torque than the modern equivalent 2.0-liter engine, it begins generating that torque at a lower engine rpm. Horsepower numbers make flashy headlines, but high torque at low rpm is extremely useful in real-world driving, getting you off the line more quickly and easily.

Toyota has not yet said in what vehicles we can expect to see this engine equipped in the future. A fair bet may be anything economy-minded that currently runs a similarly sized engine, such as the Corolla.

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The Experimental Engine That Uses Gas and Diesel .
A Reactivity Controlled Compression Ignition engine can achieve 60 percent thermal efficiency. That's incredible.This engine only lives on a test bench now, as Engineering Explained's Jason Fenske details. It's a concept developed by the University of Wisconsin-Madison that in lab testing has achieved 60 percent thermal efficiency. That means this engine is converting 60 percent of its fuel used into power rather than waste energy-a much higher number than any automotive engine in production today. For context, Toyota has a new 2.0-liter four-cylinder that achieves a remarkable 40 percent thermal efficiency, while Mercedes-AMG's F1 power unit achieves 50 percent.

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