Fuel Economy - Hypermiling Dedicated to discussions on fuel economy improvements and related modifications.

5 Stroke Engine

Thread Tools
 
Search this Thread
 
Old Aug 27, 2009 | 08:31 AM
  #1  
Brian MP5T's Avatar
Thread Starter
Senior Member
 
Joined: 11-14-05
Posts: 4,425
Likes: 0
From: www.mp5t.com
5 Stroke Engine

Not a Miller Cycle... Very Unique.

Low Displacement, High Torque

1 Main piston
2 Small Booster Pistons


http://inventorspot.com/articles/new...missions_31684

Reply
Old Aug 27, 2009 | 08:37 AM
  #2  
brickerenator's Avatar
Banned
 
Joined: 04-08-08
Posts: 7,576
Likes: 0
From: Thurmont, MD
Whoa, that's really cool

Something was telling me that there was going to be a major change in engine basics pretty soon

Hopefully this works as planned
Reply
Old Oct 26, 2009 | 02:27 PM
  #3  
gabe74gt's Avatar
New Member
 
Joined: 09-01-09
Posts: 5
Likes: 0
From: kansas
cool! interesting and great to know that!
i didint expect something like that over here
Reply
Old Oct 26, 2009 | 03:04 PM
  #4  
HunterKiller89's Avatar
Senior Member
iTrader: (1)
 
Joined: 07-20-06
Posts: 11,183
Likes: 4
From: Los Angeles
i wouldnt call it a 5 stroke... you need an even number of strokes in an engine since 2 strokes = 360°

crowers 6 stroke motor is whats really interesting to me
Reply
Old Oct 26, 2009 | 03:13 PM
  #5  
blackvette101's Avatar
Junior Member
 
Joined: 09-27-08
Posts: 436
Likes: 0
From: delray beach, florida
You may start to see this but it may be awhile. The next big thing after everybody gets direct injection is HCCI.
Reply
Old Oct 27, 2009 | 10:01 AM
  #6  
Brian MP5T's Avatar
Thread Starter
Senior Member
 
Joined: 11-14-05
Posts: 4,425
Likes: 0
From: www.mp5t.com
Originally Posted by HunterKiller89
i wouldnt call it a 5 stroke... you need an even number of strokes in an engine since 2 strokes = 360°

crowers 6 stroke motor is whats really interesting to me
Look at the valve timing... It is actually 5 strokes or events due to the small and large gears.
Reply
Old Oct 28, 2009 | 04:23 AM
  #7  
codytheoutlaw's Avatar
Banned
 
Joined: 06-02-07
Posts: 678
Likes: 0
From: lewisburg tn
Originally Posted by Brian MP5T
1 Main piston
2 Small Booster Pistons
the way i read it, its 2 small firing pistons and one large helper piston from expanding exhaust gas. meaning the outside pistons are the standard 4 stroke, and the center piston lets in the exhaust, it expands, the its exhaust again.

1)intake 2) compression 3) combustion 4) exhaust into center piston, 5) exhaust out of center piston.

right? still doesn't really make it a 5 stroke.
Reply
Old Oct 28, 2009 | 02:58 PM
  #8  
HunterKiller89's Avatar
Senior Member
iTrader: (1)
 
Joined: 07-20-06
Posts: 11,183
Likes: 4
From: Los Angeles
Originally Posted by Brian MP5T
Look at the valve timing... It is actually 5 strokes or events due to the small and large gears.
looks like 2 four strokes running at different timing?

also, given that in the pic it looks like all the cylinders have a single cam actuating all of the exhaust valves, it looks like its a 4 stroke, with 1 piston that moves at 2x the speed of the smaller ones.
also, the smaller pistons have 1 cam operating their valves, and the lobes suggest both valves are open at the same time every time....are they 2 stroke cylinders or something?
Reply
Old Nov 4, 2009 | 12:48 AM
  #9  
ssscs10's Avatar
Senior Member
 
Joined: 05-01-07
Posts: 850
Likes: 0
From: metairie, la
there is only 1 crank shaft goin through all 3 pistons how would the middle piston be able to receive the exhaust from both sides, one side at a time. kia makes an inline 3 cylinder motor that gets pretty good gas millage, i forgot the damn name of the car bc it was a rental i had, but it had pretty good pick up for only being a 3 cylinder. this is goin to be a mechanics nightmare. i am interested in it now.

wouldnt it make sence for both the outside pistons to fire at the same time then bleed off to the middle piston since its twice the size of it and the middle one is supposed to be for excess combustion gas? or am i missing something.
Reply
Old Nov 7, 2009 | 11:47 AM
  #10  
red06SC's Avatar
Senior Member
 
Joined: 10-10-08
Posts: 1,546
Likes: 0
From: Richmond
Hey, thats pretty cool..

I don't see it being feasible for high horsepower applications due to the high exhaust gas temperatures involved, though.

I would like to hear the exhaust note!
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
HEATON
Parts
12
Oct 16, 2015 07:21 PM
ernnyyes
Problems/Service/Maintenance
5
Oct 2, 2015 05:16 PM
SSLOW06
Complete Cars
1
Oct 1, 2015 07:21 PM
patooyee
Wanted - What to buy - All categories
0
Oct 1, 2015 01:07 PM
DocSvensk
2.0L LNF Performance Tech
7
Sep 27, 2015 02:24 PM




All times are GMT -4. The time now is 10:18 PM.