By Manon Marianne. Engine Wiring. Publised at Tuesday, September 19th 2017, 19:35:06 PM. Even the most efficient and robust engine technologies will never make it to market without the vehicle system meeting emissions regulations. But this is not the first instance where significant emissions control advances were needed to transition a combustion technology to market. Advances in catalyst technologies more than 40 years ago were critical to meeting emerging emissions regulations; the effectiveness of catalysts for conventional spark-ignition engines has since improved by a factor of 100 while achieving a substantial reduction in expensive platinum group metals. Meeting the new challenges is a very active area of research at ORNL and other U.S. Department of Energy national laboratories, as well as in industry.
By Faustine Arnaud. Electrical Wiring. Published at Monday, March 19th 2018, 14:30:28 PM. Materials used in wire have varied over the years. Copper has always been the first choice because it is such a good conductor and is very flexible. In the 1960 to 1970’s, aluminum wire became popular due to the rising cost of copper. Insulation was usually rubber although rubber tended to corrode due to exposure to moisture and air. PVC compounds are now used most commonly as wire insulation. Insulation is made in different colors to identify wiring circuits in a system.
By Claudette Alice. Engine Wiring. Published at Monday, March 19th 2018, 14:28:45 PM. Automakers are improving fuel economy by exploiting a new controls approach that uses the waste heat from vehicle engines. Currently, up to 65% of the heat energy produced in internal combustion engines, whether gasoline or diesel, is wasted. Typically, the powertrain or engine dissipates the heat by convection, where it is carried to the cooling circuit or lost out of the tailpipe in exhaust gases.
By Claudette Alice. Electrical Wiring. Published at Monday, March 19th 2018, 13:18:19 PM. Turn off the power to the circuit you'll be working on by switching off the appropriate circuit breaker in your home's service panel (breaker box). Test all of the wires you'll be working on with a non-contact voltage tester. The test should confirm that no voltage is present in any of the wires.
By Morgane Seraphine. Electrical Wiring. Published at Monday, March 19th 2018, 12:44:07 PM. The long thick cables of transmission lines are made of copper or aluminum because theyhave a low resistance.
By Faustine Arnaud. Engine Wiring. Published at Monday, March 19th 2018, 12:11:51 PM. But gas- and diesel-powered engines are not done yet. Just as electrified cars — whether hybrids or pure battery-powered models — seem headed for market dominance, Mazda announced a breakthrough in gasoline engines that could make them far more efficient. It is the latest plot twist in a century of improvements for internal combustion engines, a power source pronounced dead many times that has persisted nevertheless. Here is some truth-squadding on the latest in auto technology.
By Claudette Alice. Engine Wiring. Published at Monday, March 19th 2018, 11:51:02 AM. The group found that using the waste heat with optimal controls consistently delivered higher oil temperatures and significantly reduced warm-up times. This translated to fuel economy improvements of almost 4% compared to conventional thermal management strategies. The largest efficiency gains occur while heating oil from a cold start, and approximately half of the improvement comes from the powertrain and transmission sides.
By Manon Marianne. Electrical Wiring. Published at Monday, March 19th 2018, 09:23:21 AM. Carefully tuck the wires into the box. Install the box cover, securing it with two screws. The cover must be a solid "blank" without holes. Restore power to the circuit by switching on the circuit breaker.
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