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  2. Pneumatic valve springs - Wikipedia

    en.wikipedia.org/wiki/Pneumatic_valve_springs

    The compressed gas then becomes the spring, so to speak, but does not have the same traits as springs do at elevated rpm. A small light spring is sometimes fitted between the piston and retainer so that when the system is switched off the spring forces the piston down against the bottom of the bore, thus forcing the retainer upwards. This ...

  3. Should I warm up my car before driving on frigid winter days ...

    www.aol.com/warm-car-driving-frigid-winter...

    Unlike gas-powered vehicles, running your EV in your garage or out on the street does not produce harmful fumes." Contributing: Coral Murphy Marcos, Dalvin Brown, Ben Tobin, and Minnah Arshad, USA ...

  4. Driving in the snow? What to do if you're stuck in your car ...

    www.aol.com/news/driving-snow-youre-stuck-car...

    Our favorite ice scraper: Mallory USA Mallory 532 Cool-Force Snowbrush with Ice Scraper The best portable battery pack: Mophie Powerstation Plus Durable phone car holder: Beam Electronics Phone Holder

  5. Valve float - Wikipedia

    en.wikipedia.org/wiki/Valve_float

    Stiffer valve springs can help prevent valve float and valve bounce but at the expense of increased friction losses, higher stresses, and more rapid wear in the valvetrain. Various techniques have been used to offset the effect of stiffer springs, such as dual-spring and progressive-sprung valves, roller-tipped tappets, and pneumatic valve ...

  6. Road slipperiness - Wikipedia

    en.wikipedia.org/wiki/Road_slipperiness

    It is a result of snow, ice, water, loose material and the texture of the road surface on the traction produced by the wheels of a vehicle. [ 1 ] Road slipperiness can be measured either in terms of the friction between a freely-spinning wheel and the ground, or the braking distance of a braking vehicle, and is related to the coefficient of ...

  7. Cold start (automotive) - Wikipedia

    en.wikipedia.org/wiki/Cold_start_(automotive)

    Cadillac Eldorado cold start. A cold start is an attempt to start a vehicle's engine when ambient temperatures are much lower than its normal operating temperature. [1] A cold start can be difficult for an engine due to higher viscosity of oil and fuel in cold temperatures.

  8. Valve stem - Wikipedia

    en.wikipedia.org/wiki/Valve_stem

    Replacing a valve stem. A valve stem is a self-contained valve that opens to admit gas to a chamber (such as air to inflate a tire ), [ 1 ] and is then automatically closed and kept sealed by the pressure in the chamber, or a spring , [ 2 ] [ 3 ] or both, to prevent the gas from escaping.

  9. Snow removal - Wikipedia

    en.wikipedia.org/wiki/Snow_removal

    The granules are continually exposed by traffic wear, and release calcium chloride onto the surface. This prevents snow and ice from sticking to the pavement [5] Cargill SafeLane is a proprietary pavement surface treatment that absorbs anti-icing brines, to be released during a storm or other icing event. It also provides a high-friction ...