Sentences with phrase «combustion cycle efficiency»

Re-entrance of exhaust gases into the combustion chamber reduces subsequent combustion cycle efficiency.

Not exact matches

Toyota Motor Corp. says its more - powerful, second - generation hybrid electric vehicles (HEVs) will continue to use internal combustion engines that operate with the high - efficiency Atkinson cycle, says David Hermance, director of the Toyota Technical Center.

Your engine may actually draw burnt exhaust gasses back into the combustion chamber and dilute the efficiency of the next burn cycle.

Before you question the environmental impact of this apparently antiquated setup, keep in mind the big Lexus V8 utilises both Otto and Atkinson combustion cycles - the latter familiar to drivers of the fuel - sipping hybrid models - improving efficiency.

To maximize torque and efficiency, engineers added what they call Variable Valve Timing with intelligence Wide (VVT - iW) on the intake camshaft, along with VVT - i on the exhaust camshaft, allowing the engine to switch between Otto and Atkinson combustion cycles.

Moving to the Atkinson cycle means the intake valves are held open for a bit longer as the intake stage moves to the combustion stage, which improves combustion efficiency and, therefore, fuel efficiency.

It uses an Atkinson Cycle that leaves the intake valve open longer before combustion, which helps to reduce pumping losses for increased efficiency.

This B - cycle combustion process with central direct injectors further supports efficiency of the powertrain.

Without going into the mechanics of what's happening inside the combustion chamber, this briefly trades low - rpm power for greater efficiency, and then re-engages normal Otto cycle combustion when you get on the throttle.

A tuned exhaust system is an exhaust system for an internal combustion engine which improves its efficiency by using precise geometry to reflect the pressure waves from the exhaust valve or port back to the valve or port at a particular time in the cycle.

Based on the newly upgraded Pentastar engine architecture, the new hybrid engine features an Atkinson cycle combustion system for improved pumping efficiency without compromising vehicle performance, due to its hybrid electric motors working in tandem with the engine when full load performance is required.

Due to early intake valve closing in the Miller combustion cycle, volumetric efficiency is lower than for an engine with standard valve timing.

The peak torque of 500 Nm produced by the combustion engine is overlaid by the 250 Nm of peak torque produced by the electric motor.The S 300 BlueTEC HYBRID returns 64.2 mpg on combined cycle (CO2: 115 g / km) and complies with the criteria for energy efficiency class A +.

The new V - 6 runs the Atkinson combustion cycle for greater efficiency.

With its unique combination of the lightweight TMED, proven GDI and Atkinson Cycle technology in the internal combustion engine, along with the DCT providing a dynamic driving experience, the Niro offers enjoyment and efficiency all in one, targeting a combined fuel efficiency rating of 50 mpg.

Its «new combustion cycle,» Mazda says, generates the torque of a larger engine with the fuel efficiency of a smaller one.

The hybrid powertrain utilizes a similar 2.5 - liter, but with an Atkinson combustion cycle for improved efficiency.

The 2.3 - liter inline - four gas engine is optimized for efficiency with the Atkinson combustion cycle, which lowers the effective displacement of the engine by letting a bit of the fuel - air mixture out through the intake valves at the beginning of compression.

While a larger displacement Atkinson cycle engine may offer less top - end horsepower than a traditional Otto internal combustion engine, its increased thermal efficiency allows for strong acceleration and better fuel economy, Saga said.

The B cycle combustion process - an Audi development - ensures superb efficiency.

The B - cycle combustion process with central direct injection represents a new level of efficiency among the RS models.

Powering the new Prius is a reengineered 97 hp / 142 Nm 1.8 litre Atkinson - cycle VVT - i petrol four - pot — now the most efficient internal combustion engine in the world, with maximum thermal efficiency figure of 40 % — mated to a pair of 71 hp / 163 Nm electric motors that are now smaller and lighter than before.

It still uses an Atkinson combustion cycle and a cooled EGR system to help improve performance and efficiency.

[7] Power plant efficiency can also be greatly improved by using «combined heat and power» systems that use waste heat from the combustion process for space heating or industrial applications, [8] or by using a «combined cycle» that uses the waste heat to power a steam turbine and make more electricity.

If the U.S. were instead to use that natural gas to generate electricity as part of a portfolio with renewable sources of electricity, the analysis shows that «if the entire vehicle fleet were converted to electric vehicles and high efficiency natural gas combined - cycle power plants were used to generate all the additional electricity required, the increase in natural gas demand would be significantly less» than if the entire fleet was burning natural gas in its combustion engines — roughly a decrease in natural gas usage of 19 billion cubic feet per day.

If oxyfuel combustion and a very high temperature topping cycle was used, the extra efficiency from the higher oxyfuel Carnot efficiency might be enough to pay for compressing and pumping the CO2.

Once off the permafrost areas, I wish they would burn the natural gas using oxyfuel combustion, for example, in high efficiency combined cycle power plants.