By Faustine Arnaud. Engine Wiring. Publised at Saturday, February 03rd 2018, 03:25:47 AM. 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 Claudette Alice. Electrical Wiring. Publised at Tuesday, December 19th 2017, 13:38:52 PM. A home’s electrical system is prone to wear and tear. Regular testing and evaluation of receptacles, switches, and breakers can prevent dangerous situations down the road. There are two electrical upgrades that should be installed to protect your home: ground fault circuit interrupters (GFCIs) and arc fault circuit interrupters (AFCIs). GFCIs protect against electrical shock caused by ground faults or leaking electrical current. These devices monitor the current in a circuit and interrupt or stop the flow of power to that circuit if a spike or loss of power is detected. In new construction, GFCI receptacles are required by code in bathrooms, kitchens, and garages, on outdoor outlets, and in crawl spaces or unfinished basements.
By Morgane Seraphine. Electrical Wiring. Publised at Thursday, January 11th 2018, 07:05:22 AM. The National Electrical Code (NEC) dictates that no wiring splices are allowed outside of an approved enclosure. One type of approved enclosure is a junction box. A junction box is simply a standard electrical box that is mounted securely (to house framing or another structure) and contains the splice—the wiring connection—of two or more circuit cables or wires. The cables are secured to the box with cable clamps (or conduit connectors, if the circuit includes conduit), and it must have a removable cover to create a complete enclosure. Junction box covers must remain accessible; they cannot be covered with drywall or other surface material.
By Sebastien Abel. Electrical Wiring. Published at Monday, March 19th 2018, 16:13:31 PM. Also, be sure to properly label any connections you make and update them with any changes. Accidentally turning off the lights on your wife in the bathroom when you meant to disconnect the kitchen may lead to some choice words. Your electric range may also require your electric prowess. You might find yourself replacing the oven bake element, which is a relatively simple project.
By Faustine Arnaud. Electrical Wiring. Published at Monday, March 19th 2018, 14:30:28 PM. Some old homes were designed to run off less power than the modern home. Most states have a 100 amp minimum requirement. Homes running under that service could consider an upgrade to bring them to between 100 and 200 amps, which could run upwards of $2,000. Homeowners should evaluate their power demands first. “A homeowner can have an electrician test the system with an amp meter while all the big loads are on,” says Holt. “If the draw is over 75-80 percent of the service size, you might consider an upgrade. Otherwise you should be fine.”
By Claudette Alice. Engine Wiring. Published at Monday, March 19th 2018, 14:28:45 PM. Low-temperature combustion processes are of significant interest due to very high thermal efficiencies with significant reductions in many criteria pollutants. As mentioned above, LTC has been a challenge due to the state of technology: unlike conventional spark-ignition and compression-ignition combustion modes, most LTC modes are kinetically controlled and hence much more sensitive to environmental conditions and ever-changing speed/load demands. Recent advances in enabling technologies such as fuel injection systems, turbomachinery, valve actuation, sensors, and onboard computers have led to new real-time control opportunities which are enabling the potential of LTC engines with production-viable hardware.
By Claudette Alice. Electrical Wiring. Published at Monday, March 19th 2018, 13:18:19 PM. Light switches are the other electrical installations you might want to handle yourself. The majority of these in homes are what is known as a 'single-pole switch.' They're just as easy to replace as an outlet. Somewhere in your home, you may come across an odd looking switch that makes you stop and wonder. It's likely that this is a three-way switch. They're a little more complicated and used when multiple switches control a single light.
By Morgane Seraphine. Electrical Wiring. Published at Monday, March 19th 2018, 12:44:07 PM. New appliances come with their own electrical challenges, which is why many people choose to pay for the installation. Yet, if you're a true DIY-er, you can install a dishwasher without problems. The dishwasher comes with two hook-up challenges: the wiring and the water and drain lines. That's why it's a good idea to choose a location near your sink. It will save you time and money. Why oh why do you have to buy a dryer cord separately? It's one of the great mysteries of home improvement, but it's a fact of life. Next time you need to install that new dryer, you'll be prepared after this tutorial.
By Faustine Arnaud. Engine Wiring. Published at Monday, March 19th 2018, 12:11:51 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 Claudette Alice. Engine Wiring. Published at Monday, March 19th 2018, 11:51:02 AM. The team ran simulations to maximize drivetrain efficiency and minimize fuel consumption under various driving conditions, and tested their model-based approach by delivering control commands to actuators that modulated powertrain heat on a test vehicle. They monitored engine coolant temperature, engine oil temperature, transmission oil temperature, and vehicle fuel consumption, and ultimately found no additional coolant pump power was necessary for rapid warm-up and control of the drivetrain oils.
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