Atkinson cycle

The Atkinson cycle can be used in a rotary engine.

The Atkinson cycle engine was one of the first attempts at variable compression.

The engine itself runs on the Atkinson cycle and by itself makes 275 hp.

This general principle is usually called the "Atkinson Cycle".

Finally, the combustion products are expanded to atmospheric pressure, utilizing Atkinson cycle.

With the Atkinson Cycle the added efficiency is at the expense of reduced overall power.

The Prius engine makes use of the Atkinson cycle.

At this writing, most production full hybrid-electric vehicles use Atkinson cycle engines:

The ideal Atkinson cycle consists of following operations:

A similar delayed-valve closing method is used in some modern versions of Atkinson cycle engines, but without the supercharging.

This modification of the Atkinson cycle allows the use of alternative fuels like diesel and hydrogen.

The Atkinson cycle is designed to provide efficiency at the expense of power density, and is used in some modern hybrid electric applications.

A form of internal EGR is used in the rotary Atkinson cycle engine.

This type of engine retains the one power phase per revolution, together with the different compression and expansion volumes of the original Atkinson cycle.

The RX 450h's V6 engine now runs on the Atkinson cycle for added efficiency.

Furthermore, the Atkinson cycle recovers more energy per cycle than the Otto because of its longer power stroke.

The Hybrid is also upgraded to use the 2.5 L (albeit still using the Atkinson cycle for better fuel economy).

The HS 250h engine runs on the Atkinson cycle, and the powertrain uses a continuously variable transmission.

(Strictly speaking the Atkinson Cycle refers to an engine with mechanically different length compression and expansion strokes.

The Atkinson cycle configuration and exhaust-heat recovery system is also used on the 2010 Lexus RX 450h.

The Atkinson cycle engine is a type of internal combustion engine invented by James Atkinson in 1882.

These electric motors can be used independently of, or in combination with, the Atkinson cycle engine, to provide the most efficient means of producing the desired power.

The disadvantage of the four-stroke Atkinson cycle engine versus the more common Otto cycle engine is reduced power density.

Compared to the prior Otto cycle system, the Atkinson cycle has a lower compression ratio, along with higher expansion ratio inside engine cylinders.

This means that the engine can be self supercharged (see supercharger), or operate as a Miller cycle / Atkinson cycle.