|
Tractor Talk Discussion Board |
Re: Re: Benefits of higher compression?.
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by Additionally...Jerry/MT on June 26, 2004 at 18:08:08 from (206.231.186.93):
In Reply to: Re: Benefits of higher compression?. posted by Jerry/MT on June 26, 2004 at 17:46:25:
I should have said that for a given displacement engine, increaseing the compression ratio will give you more power and thus reduced specific fuel consumption.(Remember the sprk ignition engine runs at essentially constant fuel to air ratio so if the engines have the same displacement, they will have the airflow at a given rpm and hence the same fuel flow.) The pressures and temperature will be much higher at the end of the compression stroke in the high compression engine.(ideally, compression pressure = atmospheric pressure x (compresion ratio)^1.4 where 1.4 is an exponent) if you compare ideal presures for a 6.0 compression ratio to say compression ratio 8.0, the ideal pressure at end of the compression strokeis approximately 50 % greater. The temperature are also significantly greater. And we haven't ignited the mixture yet! sot he peak pressure and temperatures are much higher so the force on the top of the piston is very greatly increased and that's what makes the power! hope this helps you.
Follow Ups:
Home
| Forums
Today's Featured Article -
Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
Copyright © 1997-2025 Yesterday's Tractor Co.
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. Yesterday's Tractors - Antique Tractor HeadquartersWebsite Accessibility Policy |
|
