10 July 2007

High Tech Weed Whacker

Direct Injection 2-Stroke Technology

Direct in-cylinder fuel injection (direct injection, DI) is a technology that has shown the ability to greatly reduce emissions from two-stroke engines. In a DI system the carburetor is eliminated, and the fuel is introduced into the combustion chamber via an injector mounted in the top of the chamber’s cylinder head. This allows exhaust products to be scavenged from the cylinder using air only. Fuel is injected into the cylinder later in the cycle, greatly reducing the amount of unburned fuel that is allowed to escape during scavenging. The DI process allows for a locally rich region around the spark plug, eliminating the need for enrichment of the entire cylinder to achieve stable combustion. Elimination of rich air/fuel ratios significantly reduces carbon monoxide emissions.


The link.


How long has this been around?

I will admit that I don't keep up with Motorcycle technology like I used to, but I have been waiting to see this for a while now.

Lawnmowers, outboards, yes, even weed whackers can greatly benefit from this.

There are literally hundreds of small engines used in construction, all powering different types of useful devices.

No more choke, no more fiddling with the damn mixture screws trying to make it run right, I like it.

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