Algodoo

by **Dare** » Tue Jun 21, 2011 1:50 pm

Dare

Rating:

Filesize: 0.54 MB
Comments: 24
Ratings: 11

Built and tested in Algodoo [1.8.5].

Hello, this is my beautiful 1909 Anzani 3-cylinder Y-type engine. Well, loosely based on. My engine here is amazing because I have implemented an electronic valve timing system.

How it Works:
This uses laser pens on a cam wheel that spins at exactly 1/2 the speed of the full engine stroke. As the pens come around, the valve spring is lengthened or shortened depending on the code and stroke. As you can see, there are no complex push rods or angled cam wheel pieces. This provides an efficient and well-timed valve system. :angel:

Operation:
1) Turn on all 3 cylinder laser pens with numbers "1", "2" and "3". This is the ordering of the cylinders in CCW direction.
2) (This is the fun bit) Grab the wooden propeller and spin it quickly in CCW direction. If you have spun it right, the sparking process should begin and the engine is off and running. Let her run for as long as you want, the engine is 100% reliable (okay, maybe 98% reliable).
3) Now to turn the engine off. Simple. Turn off the laser pens with "1", "2" and "3".

Power Adjustment:
Early aircraft engines had no way of controlling power. Thankfully, I have a basic method of controlling power. Simply turn off 1 or 2 of the cylinders at a time to slow the engine down.

Enjoy the mechanical glory. Oh, and engine firing order is like the real engine. 1-2-3 in CCW direction. Also, colour codes have been added for you to see the 4-stroke cycle.

by **Gent** » Tue Jun 21, 2011 2:41 pm

Hi Dare, this is great but the firing order should be 1,3,2
try it it will run smoother :thumbup:

by **Dare** » Wed Jun 22, 2011 9:15 am

Hi Gent,

Are you sure the timing here is wrong? Maybe my information is wrong. Could you post a link, animation of the timing or a scene response so I can have a look? Thanks for comments :thumbup:

by **Gent** » Thu Jun 23, 2011 6:01 pm

I will try and fix it later and post as a scene response.
For one thing the cam will have to turn the opposite direction so it wont be a real quick fix :lol:

Done right you will only need 1 set of lasers

by **Gent** » Sun Jun 26, 2011 6:51 am

Ok this has the correct firing order but I messed up your valve timing
also the gears need work, its pretty hard to make a nice planitary gear set
and I didnt want to completely start over

The main point I'm trying to make is a 1,2,3 firing order would go
"bang,bang,bang,coast,coast,coast"
A 1,3,2 order would be
"bang,coast,bang,coast,bang,coast"
I dont want to compleatly rebuild your engine but most engines are designed
to fire as evenly as possible

Just tryimg to educate you a little :lol: