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 Morgane Seraphine. Engine Wiring. Publised at Wednesday, March 21st 2018, 08:37:17 AM. Internal combustion engine efficiency has historically been limited more by the state of technology than innovation. As an example, the potential of technologies such as gasoline direct injection were known and attempted in production more than 50 years ago, but direct injection has only become widely available in production within the last decade and now makes up approximately 38 percent of new light-duty vehicle sales. Another example is low-temperature combustion modes such as homogeneous charge compression ignition combustion—in which fuel and air are injected during the intake stroke and then compressed until the entire mixture reacts spontaneously—which were demonstrated in a laboratory more than 30 years ago but are still many years away from market introduction.
By Sebastien Abel. Engine Wiring. Published at Wednesday, November 29th 2017, 14:28:15 PM. The camshaft is the brain of the engine. It works in conjunction with the crankshaft via a timing belt to make sure intake and outtake valves open and close at just the right time for optimal engine performance. The camshaft uses egg-shaped lobes that extend across it to control the timing of the opening and closing of the valves.
By Olivier Danielle. Electrical Wiring. Published at Tuesday, November 28th 2017, 10:50:34 AM. Electricity distribution is the penultimate stage in the delivery (before retail) of electricityto end users. It is generally considered to include medium-voltage "less than 50 kV"power lines, electrical substations and pole mounted transformers, low voltage"less than 1000 V" distribution wiring and sometimes electricity meters.
By Faustine Arnaud. Engine Wiring. Published at Saturday, November 25th 2017, 03:02:52 AM. Contrast that to an external combustion engine, where fuel is burned outside the engine and the energy created from that burning is what powers it. Steam engines are the best example of this. Coal is burned outside of the engine, which heats water to produce steam, which then powers the engine.
By Faustine Arnaud. Engine Wiring. Published at Thursday, November 23rd 2017, 02:10:24 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 Morgane Seraphine. Engine Wiring. Published at Wednesday, November 22nd 2017, 01:14:33 AM. That is not to say that things will stay as they are now. The engine is undergoing a significant evolution of its own, as new fuel economy and emissions standards in the light-duty and heavy-duty sectors push the development of new technologies on an unprecedented scale toward the theoretical limits of engine operation. Coupled with continuing research into fundamental engine processes, the introduction of affordable high-performance computing, and the adoption of advanced manufacturing techniques throughout industry, those new technologies are leading to potentially disruptive opportunities for the introduction of engines with extraordinarily high efficiencies. How these new engines perform and how they will be integrated into new vehicle architectures will be the story of personal mobility for this half of the 21st century.
By Marthe Mathilde. Electrical Wiring. Published at Tuesday, November 21st 2017, 21:48:08 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 Claudette Alice. Engine Wiring. Published at Monday, November 20th 2017, 21:36:19 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.
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