In connection with the replacement of lto cogeneration units with gasoline engines with otto cycle
, The heat distribution in the cogeneration unit engine room will also be reconstructed.
A 2.4 Atkinson cycle petrol engine replaces the previous regular Otto cycle
Biogas can be used as a fuel for diesel and Otto cycle
Diesel/Biodiesel-powered tractors), while small or medium size use Otto cycle
In the automotive industry, ethanol has been used in Otto cycle
engines; the use of ethanol has led to the development of the so called "flex" technology that allowed operation with 100% gasoline or ethanol as fuel.
A larger proportion of constant volume combustion by an increased fuel injection rate, advanced injection timing, HCCI (homogeneous charge compression ignition) combustion , PCI (premixed compression ignition) combustion  etc., have been investigated, since the thermal efficiency of the Otto cycle
is ideally higher than other reciprocating engine cycles .
The isothermal compressor could be used as the compression stage in an Otto cycle
engine, enabling the use of a higher compression ratio and improving efficiency.
The clever bit is that by using variable valve timing the engine can swap from the conventional Otto cycle
to the Atkinson cycle (in which the inlet valves are held open longer and allow air to reverse flow through the inlet manifold) to save fuel at cruising speeds.
For decades, efforts to meet ever-increasing standards like this have depended on a thorough understanding of Otto cycle
dynamics in internal combustion engines and development of ways to change emissions through exhaust gas recirculation (EGR).
The Dual Variable Valve Timing with intelligence (VVT-iW) system allows the engine to start in the Otto cycle
and then run in the more fuel efficient Atkinson cycle (there is late intake valve closing during the Atkinson cycle which reduces pumping losses and boosts fuel economy; the "W" in the engine descriptor nomenclature stands for "wide," as in a wider intake cam timing control).
 applied the Miller cycle into an Otto cycle
natural gas engine and the SFC and power output of the engine decreased.
When fully developed with its turbocharged and Air-Hybrid components, the engine is expected to achieve significant gains in fuel efficiency--the most since the inception of the Otto cycle
over 130 years ago, according to the company.