Tag: Technology

Sep 27 2010

Pique the Geek 20100926: Sustainability (and Connexions) Part the First

I have been thinking about sustainability for a long, long time.  Unfortunately, in my scientific analysis, it not possible if we continue on the route that we have chosen.  This is an extremely complex topic, and might even deserve its own, new, date.  I am thinking that Wednesdays might be a good time for it.  This is more speculation than science, so it does not properly belong on Pique the Geek for the long term.

This will be the most controversial topic that I have ever tackled.  I may be dead wrong in some of my speculations, but a lot of thought has gone into them.  I offer no easy remedies but do ask the hard, horrible questions and illustrate them with facts.  I will ask that you, my readers, tell me whether this deserves a new series, uncoupled from Pique the Geek. Please read further.

Aug 30 2010

Pique the Geek 20100829: Automobiles, Part III. How to Keep Everything Going at Once

We have talked about how engines work in the past couple of installments of this series, and now need to bring together some important engineering factors.  We have talked about intake strokes, compression strokes, and others, but only very superficially touched on how everything comes together.

For an engine to work properly, everything has to be coordinated.  For simplicity, we will consider a conventional four stroke, gasoline powered automobile engine.  Diesel engines are in some aspects simpler, and will be covered concomitantly.

Remember, an engine has to do all of the things about which we have discussed, completely synchronized, and EVERY time.  For an engine rotating at, say, 4000 times per minute, this can be a daunting task.

Aug 09 2010

Pique the Geek 20100808: Automobiles Then and Now, Part One: Overview

With the near release of the Nissan Leaf and the Chevrolet Volt, both 100% electric driven automobiles, I thought that it would be appropriate to reflect on the history and technology of the automobile.  Actually, the Volt also has an internal combustion engine on board, but that engine runs a generator, so both of these cars are exclusively driven by electric motors.

The engine to generator concept is not at all new, as practically all big Diesel locomotives are driven that way.  There are significant advantages in using electric motors to propel vehicles, even if they are powered by on board generators.  We shall get to that in future.

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