By Morgane Seraphine. Engine Wiring. Publised at Wednesday, March 21st 2018, 08:37:17 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 Faustine Arnaud. Engine Wiring. Publised at Monday, March 19th 2018, 12:11:51 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 Faustine Arnaud. Electrical Wiring. Published at Friday, December 01st 2017, 15:47:08 PM. “Anywhere there is the chance of contact with water or the ground, there should be a GFCI,” says Brett Brenner, president of the Electrical Safety Foundation International (ESFI). “It’s estimated that GFCIs accounted for roughly a 70 percent reduction in electrocutions,” he says. GFCIs are also available as circuit breakers installed in the panel, giving ground fault protection to designated circuits in the home.
By Thibault Margaux. Engine Wiring. Published at Thursday, November 30th 2017, 14:59:04 PM. 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 Sebastien Abel. Engine Wiring. Published at Wednesday, November 29th 2017, 14:28:15 PM. The push toward higher-efficiency engines will alter exhaust temperatures and chemistry and may create challenges for emission control technologies. For example, new higher-efficiency engines will have lower exhaust temperatures, due to more efficient work extraction at the piston. Lower exhaust temperatures will, in turn, require the development of new emission control technologies, which must not only be effective at low temperatures but also must survive high exhaust temperatures encountered under high load conditions.
By Olivier Danielle. Electrical Wiring. Published at Tuesday, November 28th 2017, 10:50:34 AM. Separate the circuit wires at the existing splice and loosen the cables as needed to make room for the new junction box. Mount the box to the framing (or other support structure) with screws driven through factory-made holes in the back or side of the box, as applicable.
By Faustine Arnaud. Engine Wiring. Published at Saturday, November 25th 2017, 03:02:52 AM. "We first needed to understand how much heat was available from the powertrain during various drive cycles and cold start conditions," he says. By simulating thermal components that control the powertrain heat, such as the electronic thermostat, cooling fans, grill shutters, and water valve, they determined the best way to distribute the available energy.
By Faustine Arnaud. Engine Wiring. Published at Thursday, November 23rd 2017, 02:10:24 AM. 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 Morgane Seraphine. Engine Wiring. Published at Wednesday, November 22nd 2017, 01:14:33 AM. Building on that work, in 1864 two German engineers named Nicolaus August Otto and Eugen Langen founded a company that made engines similar to Lenoir’s model. Otto gave up managing the company and started working on an engine design that he had been toying with since 1861. His design led to what we now know as the four-stroke engine, and the basic design is still used in cars today.
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