Higher Compression ratio does not improve efficiency. A higher expansion ratio increases efficiency. That is why a LP turbine is placed after a high pressure turbine. And why reciprocating steam engines used compound cylinders. Higher compression requires more energy on the compression stroke than a low compression ratio.High compression also also imputes more heat= higher temps in the air/fuel mixture prior to ignition. Also more heat wasted into the water jackets.Variable cam timing and some other tweaks get the gasser expansion ratio higher than the compression ratio.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Buying your first tractor: Choosing the right one - by Chris Pratt. They cost less than the tax on a new tractor (at least where we live). They have the weight to do the job. They are simple and understandable. They even have a history and can be restored to become a major source of pride and enjoyment. But how do you know what to buy and how do you make the right purchase? There is a surprising number of machines available in every shape and size imaginable. Like most things in life, your needs have a lot to do with wh
... [Read Article]
Latest Ad:
1958 FORD RARE 4x4 801 TRACTOR, ELENCO/FRONT DRIVE, FRONTLOADER AND WEIGHTED REAR WHEELS, FIVE SPEED, LIVE PTO, GAS ENGINE, NEW REAR WHEELS AND TIRES, ENGINE RUNS.
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
