Kadenacy effect

Kadenacy effect

The Kadenacy effect is an effect of pressure-waves in gases. It is named after Michel Kadenacy who obtained a French patent for an engine utilizing the effect in 1933. There are also European and US patents.

The Kadenacy effect has been utilized in pulse jet engines and in two-stroke piston engines and is important in the design of high-performance motorcycle engines.

In a two-stroke engine the pressure-drop resulting from the Kadenacy effect assists the flow of a fresh charge of air, or fuel-air mixture, into the cylinder. However, the Kadenacy effect alone is not sufficient and must be boosted in some way. In small engines this is done by crankcase compression and, in large engines, by the use of a Roots blower.

ee also

* Inertial supercharging effect

ources

* [http://www.pulse-jets.com/valveless/index.htm Pulse-jets website]

External links

* [http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=EP0479342&F=0&CY=ep&LG=en&RPN=FR761047 Reference to European patent]
* [http://www.freepatentsonline.com/D360178.html Reference to US patents]


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Kadenacy effect — when a port of a two stroke engine opens abruptly, as is the case with a rectangular exhaust port, the cylinder pressure gives rise to a positive pressure wave transmitted down the exhaust pipe at the speed of sound …   Dictionary of automotive terms

  • effect — See alteration effect barrier effect braking effect engine braking effect ground effect hall effect kadenacy effect liftoff effect load alteration effect …   Dictionary of automotive terms

  • Inertial supercharging effect — The inertial supercharging effect is the result of incoming fuel/air charge developing momentum greater than intake stroke would generate alone. It is achieved by a combination of head/port configuration, and cam profile/valve timing.Two stroke… …   Wikipedia

  • Valveless pulse jet — A Valveless pulse jet (or pulsejet) is one of the simplest jet propulsion devices ever designed, and is the simplest form of jet engine that does not require forward motion to run continuously. Valveless pulsejets are low in cost, light weight,… …   Wikipedia

  • List of effects — This is a list of names for observable phenonema that contain the word effect, amplified by reference(s) to their respective fields of study. #*3D audio effect (audio effects)A*Accelerator effect (economics) *Accordion effect (physics) (waves)… …   Wikipedia

  • 2-stroke power valve system — The 2 stroke power valve system is an improvement to a conventional two stroke engine that gives a high power output over a wider RPM range. Operation of a two stroke engine A stroke is the action of a piston travelling the full length of its… …   Wikipedia

  • Two-stroke engine — Brons two stroke V8 Diesel engine driving a Heemaf generator. A two stroke engine is an internal combustion engine that completes the process cycle in one revolution of the crankshaft (an up stroke and a down stroke of the piston, compared to… …   Wikipedia

  • Expansion chamber — An Expansion chamber is an exhaust system used on a two stroke cycle engine to enhance its power output by improving its volumetric efficiency. It makes use of the energy left in the burnt exhaust exiting the cylinder to aid the filling of the… …   Wikipedia

  • Exhaust system — Exhaust manifold (chrome plated) on a car engine …   Wikipedia

  • Scavenging (automotive) — Uniflow scavenging For other uses, see Scavenger (disambiguation). In automotive usage, scavenging is the process of pushing exhausted gas charge out of the cylinder and drawing in a fresh draught of air ready for the next cycle. This process is… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”