High efficiency engine with variable compression ratio and...

F - Mech Eng,Light,Heat,Weapons – 02 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

F02B 75/04 (2006.01) F02B 25/18 (2006.01) F02B 37/04 (2006.01) F02D 15/04 (2006.01)

Patent

CA 2429820

An internal combustion engine using variable compression ratio and variable fuel supply to one of two combustion chambers is presented. Varying the compression ratio is accomplished by changing the volume of a single combustion chamber (53) with an auxiliary piston (57) that is biased in an open position by spring (58). This, in combination with lean burning, results in a highly efficient prime mover particularly at the low torque outputs needed in passenger car applications. The relationship of compression ratio and fuel feed is varied with engine speed. Burning occurs in two stages, and this results in a clean exhaust. The invention allows very efficient throttling of two-cycle engines to be realized. A concept for supplying air to a two-cycle engine at very good efficiencies is also presented. The combination of these techniques can result in an engine for automotive use that is half the weight of conventional units with a thermal efficiency of 40 % or more at average engine output.

La présente invention concerne un moteur à combustion interne faisant appel à un taux de compression variable et à une alimentation en essence variable d'une des deux chambres de combustion. La variation du taux de compression est obtenue en changeant le volume d'une seule chambre de combustion. Ceci, en combinaison avec la combustion d'un mélange pauvre, permet d'obtenir un moteur primaire à efficacité élevée, particulièrement aux faibles puissances de couple nécessaires dans les applications de voitures particulières. La relation entre le taux de compression et l'amenée de carburant varie avec le régime du moteur. La combustion se produit en deux étapes, ce qui permet d'obtenir un échappement propre. L'invention permet d'obtenir un étranglement très efficace des moteurs à deux temps. L'invention concerne également un concept permettant d'alimenter en air un moteur à deux temps avec de très bons rendements. La combinaison de ces techniques permet d'obtenir un moteur automobile pesant la moitié du poids des unités traditionnelles avec un rendement thermique de 40 % ou plus à puissance moyenne.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

High efficiency engine with variable compression ratio and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High efficiency engine with variable compression ratio and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High efficiency engine with variable compression ratio and... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1622780

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.