Posts

Sorted by Archive: February, 2017 ( 2 post/s)

  • Intensive Electronic Engine Managements Yields Lower Emissions, Greater Reliability, and Superior Fuel Economy

    Monday 06 February 2017

    I replaced a Mass Air Flow sensor on a Volvo 850 yesterday. The diagnostic protocol I completed before condemning a $350 part reminded me once again how computers have taken over every aspect of engine management, up to and including “drive-by-wire” systems that actually control the throttle in response to inputs from the gas pedal, engine speed, gear range, etc. In other words, when you press on the gas, there is only an electrical connection to the engine from the pedal. Instead of... read more

  • Bicycling as Transportation

    Monday 06 February 2017

    The greenest form of transportation is attached to the bottom of your legs- your feet! The ‘carbon footprint’ of walking is about as small as it gets and it has the additional benefit of being healthy as well. However it takes time, and unless you only have a mile or less to go, getting around by foot can consume a large part of your day. Riding a bicycle, on the other hand, is a lot more efficient. Its’ carbon footprint is equally modest, and in small, relatively level cities... read more

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