Camless engines, info and articles you know about |
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Camless engines, info and articles you know about |
Tom |
Dec 28 2010, 11:48 AM
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#21
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
Anyone know about any interesting articles to share about camless engines?
Here is one link. http://autospeed.com/cms/title_Camless-Eng...10/article.html Having infinitely variable cam timing would open so much performance and economy it just boggles my little mind! And not having cam chains to worry about would be something positive also. Just imagine a 2 liter type 4 with heads that would essentially have dual overhead camshafts with infinitely variable valve timing. WOW!! Tom |
charliew |
Dec 29 2010, 10:13 AM
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#22
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Advanced Member Group: Members Posts: 2,363 Joined: 31-July 07 From: Crawford, TX. Member No.: 7,958 |
Two cycle is just that. Twice as many power pulses as 4 cycle. As in 12 cylinders 4 cycle compared to 6 cylinders 4 cycle. Most 2 cycle motors are tuned with an exact exhaust system for the utmost power. The ones I am familiar with are not fuel efficient. My 350cc 2 cycle 69 kawasaki twin made 42 hp. It used a rotary disk on the crank with a notch in it letting the intake port open before the piston started up. Wider notch = more duration and more power at high rpm. Expansion chamber exhaust to tune the power band. When a rotary valve would come loose on it's splined sleeve on the crank the motor would have one cylinder that would only make power at one rpm and it would vary with how much the valve would free spin.
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