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Re: Re: Re: Re: higher RPM or higher gear?
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Posted by matthew on April 30, 2003 at 20:36:21 from (24.216.85.20):
In Reply to: Re: Re: Re: higher RPM or higher gear? posted by Shane on April 30, 2003 at 15:19:39:
OK Shane, I�m going to take a walk on the wild side and respond to your question. Please note that I will not use �never� or �always� because there are more ways to regulate fuel and/or air than I can count. In yesterdays spark ignition engines (gasoline and others) fuel was mixed with air in a carburetor. To regulate the amount of fuel leaving the carburetor and entering the engine, a mechanism to close off or restrict the air/fuel mixture was used called a throttle. Even on today�s spark ignition engines, you may or may not find a carburetor as such, but you will still find some mechanism to �throttle� the air entering the engine so that it is proportional to the amount of fuel delivered (regardless of how the fuel gets there). Now, a diesel compresses a full cylinder of air to generate energy for autoignition (no spark plug). You wind up with a desirable energy effecient lean fuel mixture. As such the diesel engine does not need an apparatus for restricting or �throttling� the combustion air. The fuel flow is regulated as necessary to control the energy into the engine, but the air is not. Thus, no �throttle�. So where does that leave us? As your asked, what does it have then? We can�t call it a gas lever. We can�t call it an accelerator or someone one this forum would ask where is the de-accelerator. We can�t call it a throttle if it is a diesel. And to make matters worse, even on a gas tractor this lever isn�t even directly connected to the �throttle� (air restricter) on the engine like the gas pedal would be on automobiles. The dang thing is connected to the governor and the governor connects to the �throttle� (your car probably does not have a governor). So to eliminate any confusion in the future, I suggest we call it the �thingy by the steering wheel � or the �governor speed setting lever�. What do yall think? I am open to suggestions. have fun matthew
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