|
Tractor Talk Discussion Board |
Re: Re: Re: Why do JD engines go putt-putt?
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by greenbeanman on February 14, 2004 at 09:39:29 from (171.75.205.207):
In Reply to: Re: Re: Why do JD engines go putt-putt? posted by Paul in Mich on February 14, 2004 at 07:34:38:
A 4 cycle engine has each piston firing at 720� of crankshaft turn rather than at 360�. #1 Down piston--Suction or intake.
#2 Up piston--Compression of the fuel air mixture.
#3 Down piston--Firing and the power stroke.
#4 Up piston--The exhaust stroke, and then the cycle repeats. What is being said is that the John Deere two cylinder doesn't fire a piston at the end of each 360� rotation, but fires both cylinders during one 360� rotation. The flywheel then carries the engine until the first piston fires again after a full 720� from when it first fired, the second 180� after that. 0�-180� Intake on #1, exhaust on #2
180-360�Compression on #1, intake on #2
TDC (theory)Firing at 360� #1 piston
360-540� Power stroke on #1, compression on #2
TDC Firing at 540� #2
540-720� Exhaust on #1, power stroke on #2 Geez, I hope I've got that right.
Follow Ups:
Home
| Forums
| Order Support
Today's Featured Article -
Bad Vibes - by Curtis Von Fange. One of the strangest ways to communicate with our tractor is to ask it how it feels. "Ask it how it feels," you say? Yup, ask it how it feels. Now, as with the other articles in this series one has to be able to hear what 'ole blue' is trying to say in response. The nice thing about our old iron friends is that they are usually quite consistent in their response, rather unlike some people I know who might change what they say due to the weather or other mitigating circumstances. But since t
... [Read Article]
Latest Ad:
1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
[More Ads]
Copyright © 1997-2026 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 |
|
