By Elvire Fernande. Engine Wiring. Publised at Tuesday, January 30th 2018, 18:25:31 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 Thibault Margaux. Engine Wiring. Publised at Tuesday, January 23rd 2018, 16:16:00 PM. From my position at Oak Ridge National Laboratory, I have been able to see the intersection of knowledge discovery, advanced engine and vehicle technology development, and the use of one-of-a-kind computing resources. Although the public tends to think of automobile and engine research as a purely private-sector concern, my colleagues and I at ORNL are helping to realize the full efficiency potential of internal combustion engines.
By Elvire Fernande. Engine Wiring. Published at Wednesday, November 01st 2017, 07:35:05 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 Thibault Margaux. Engine Wiring. Published at Monday, October 30th 2017, 18:41:31 PM. he combustion chamber in an engine is where the magic happens. It’s where fuel, air, pressure, and electricity come together to create the small explosion that moves the car’s pistons up and down, thus creating the power to move the vehicle. The combustion chamber is made up of the cylinder, piston, and cylinder head. The cylinder acts as the wall of the combustion chamber, the top of the piston acts as the floor of the combustion chamber, and the cylinder head serves as the ceiling of the combustion chamber.
By Faustine Arnaud. Electrical Wiring. Published at Friday, October 27th 2017, 16:08:15 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 Marthe Mathilde. Engine Wiring. Published at Monday, October 23rd 2017, 10:50:45 AM. All actuators needed to work in concert to heat the oil fast and keep the temperature steady. Opening the grill shutters or running the electric air fan consumes power. Controlling actuators in concert is a new way of addressing thermal management. While more complex, it enables the system to arrive at a steady temperature quicker and under all operating conditions, which extends the life of each thermal-control actuator, Laboe says.
By Faustine Arnaud. Electrical Wiring. Published at Sunday, October 22nd 2017, 07:49:09 AM. One of the main trends in the further industrialization of electrical installation work is the use of large-scale electrical engineering facilities, for example, the rooms of electric-drive control stations and of urban transformer substations. Such facilities are delivered by industry with the electrical equipment completely installed and adjusted. In this case, electrical installation work is reduced to the installation of such facilities and the connection of the facilities to external power networks.
By Faustine Arnaud. Electrical Wiring. Published at Sunday, October 15th 2017, 07:16:21 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 Thibault Margaux. Electrical Wiring. Published at Monday, October 09th 2017, 05:17:57 AM. Before you begin your first DIY electrical project, you should learn a little about the wires you'll be working with. Wires vary greatly and each is designed for a purpose. The wiring in your home is chosen to accommodate the load it must carry as well as the conditions it will be exposed to. Some are designed for indoor use while others can be buried. Some are for your panel while others hook up your lights and outlets. It may be confusing at first, but you will probably deal with only a few types of wire in your home.
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