Who makes Atkinson engines?
Toyota has announced the development of two hyper-fuel-efficient small-displacement petrol Atkinson cycle engines: a three-cylinder 1.0-liter and four-cylinder 1.3-liter which will be introduced across the range from next year in 14 different variations.
Who invented the Atkinson cycle?
engineer James Atkinson
Like countless other 19th-century inventors, entrepreneurs, and tinkerers, British engineer James Atkinson sought ways to improve on the Otto four-stroke combustion engine, first produced in 1876.
Is Atkinson a reciprocating engine?
The Atkinson cycle engine is a type of reciprocating internal combustion engine invented by James Atkinson in 1882. It is practically a common Otto cycle engine, but with a modified crankshaft crank for greater efficiency at the expense of a reduction in horsepower. .
What is a Ford Atkinson cycle engine?
What Is A Ford Atkinson Engine? A type of internal combustion engine, James Atkinson devised the Atkinson-cycle engine in 1882. There is a low barrier to entry into the Atkinson cycle in order to provide efficiency and low electricity density. It is also used in some modern engine versions to make this variation.
Who uses Atkinson engines?
Chevrolet Volt. Chrysler Pacifica (front-wheel drive) plug-in hybrid model minivan. Ford C-Max (front-wheel drive / US market) hybrid and plug-in hybrid models. Ford Escape/Mercury Mariner/Mazda Tribute electric (front- and four-wheel drive) with a compression ratio of 12.4:1.
How much more efficient is an Atkinson engine?
How Much More Efficient Is An Atkinson Cycle Engine? Thus a maximum thermal efficiency of 37 percent is achieved; an increase in fuel efficiency of approximately 30 percent over current automobiles – 60 miles per gallon (US) vs 78 miles per gallon (US).
Why do Hybrids cars use Atkinson cycle engines?
An Atkinson cycle engine makes less power than the otherwise equivalent Otto cycle unit, which is why the design is more popular with hybrid models, which aim for fuel economy over acceleration and have electric motors that can compensate for the difference.
Why is Atkinson cycle more efficient?
The Atkinson cycle is more efficient because it has a large expansion ratio than compression ratio. It delays the closing of the suction valve until the piston completes 20% to 30% of the upstroke during the compression stroke.
What is the difference between Miller and Atkinson cycle?
An Atkinson-cycle engine differs from a Miller-cycle engine in that the Miller-cycle engine uses some device to push air into the system – a supercharger or turbocharger – while the Atkinson-cycle engine is naturally aspirated.