Recently, domestic media reports out of the scanned picture a group of FAW-Volkswagen’s internal documents. Its main contents are about the upcoming domestic FAW-Volkswagen VW Group’s latest 1.5 TSI evo engine, it reported that the next model will be the FAW-Volkswagen Chengdu factory production and assembly in the eighth golf and explore songs, Sagitar current model, in order to and gradually replace the current EA211 1.4T engine.
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as with the current EA211 1.4T, this 1.5TSI evo engine also provides two low-power versions, the maximum power low-power version of 130 horsepower and peak torque of 200 Nm middot; m / 1300-5500 rpm; and the high-power version of the maximum power of 160 horsepower and peak torque of 260 cattle middot; m / 1400-4000 rpm. Although parameter point of view, this new EA211 engine and the old section of the upgrade is not big, but thanks to the Miller cycle, variable geometry turbocharger blades and improve the engine thermal management technology, this engine in the whole light quantification, dynamic ride comfort, fuel economy and thermal efficiency, both have increased dramatically.
higher aluminum content, in weight than [ 123]
according to information previously released by the Volkswagen Group, the technical basis for this 1.5TSI EVO 1.4T engine from the old section models, both engines have identical bore even, due to the increased piston stroke 5.9 mm, and therefore enhance the engine displacement 0.1 liters. In addition, it comprises a piston, cylinder and cylinder head, including the parts are made of aluminum alloy material. To dropLow friction, high power of 160 hp special version spraying the cylinder liner at the position, and piston pins.
Thanks to this, extremely smooth surface of the cylinder body, while friction-reducing wear-resistant and more, compared to the previous cast iron engine, specially treated surface in thermal performance, the anti-knocking and fuel corrosion resistance inferior aspect of the engine are improved. This also means that the new engine can be well compatible with E10 bio-ethanol gasoline for use in some countries.
variable geometry turbocharger, turbo lag reduction 35 Percent
in addition to lightweight design than a variable geometry turbocharger is also a large technical innovation of this new engine, this initially mounted on a Porsche 911 GT2 RS models black & turbocharged engine ensures a wider torque output of the engine outer platform and a good characteristic.
In a conventional turbine engine, the exhaust gas of the engine may drive a turbine, which is connected to the inlet of a compressor, by “compression” action to promote more air cylinders. But for the turbine blade of the supercharger angularly fixed, only the emissions of the engine reaches a certain speed of the movable scroll, in order to achieve the optimum rotation speed. At low rpm, the exhaust gas turbocharger requires more and longer amount of time to work, which is what we commonly known as turbo lag.
In this system , the outer end of the turbocharger increases the variable angle vanes of a set, the engine exhaust gas by the guide vanes act on the turbine blades, the blades rotate driven. The ECU may blade by an engine speedAngle adjustment, thus easing the turbo lag. Specifically, the engine is at low speed, by changing the angle of the guide vane, so that the cross sectional area of the air inlet becomes smaller, the formation of larger “push” to promote the rotation of the turbine; at high speed, with the exhaust pressure increasing, followed guide vane angle to maximum, to achieve the desired supercharging effect. According to data published by the manufacturer, after application of the technology, this high power version 1.5TSI evo engine torque which has broader platform 35 and reducing the percentage of turbo lag.
ATC closing cylinder technology, low load support two cylinders work
and General Group LSY 2.0T engine, like, this new cylinder Volkswagen engine also by closing techniques to further reduce fuel consumption. Two slide module mounted on the camshaft, the engine may stop operating the intake and exhaust valves of the cylinder 3 when the load is low. This means that in this mode, the engine driving the same distance, fuel injection number reduced by half. Further, in order to further enhance the combustion efficiency, to meet the emission regulations in the next few years, the engine also features a fourth generation of direct fuel injection system, which can achieve the maximum fuel injection pressure of 350bar.
innovative thermal management techniques directions
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the public for a whole new generation engine thermal management technology, design ideas can be described as simple. By computer controlling the pumps and other components, so that the cooling liquid in the tank stops flowing cold state. The resulting benefits are obvious: 1, reduce the heat-up time, reduces wear of the cylinder. 2 shorten the winter air start time. Of course, in some complicated conditions, the intelligent control of the cooling system allows the cooling liquid according to a predetermined map showing the flow, thereby ensuring the engine is always in the optimum operating temperature.
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to be sure, this engine is expected to debut on the domestic golf eighth, and then north-south public product line rapidly growing popularity. Overall, this new 1.5T engine, although the application of a large number of cutting-edge technology, but in the power parameters and overall performance is not too amazing performance. But let some consumers are delighted that finally do not “worry” eighth-generation Golf will become like Fox as the presence of “full-line three-cylinder” of. After all, we have always been well versed in the Chinese consumer preferences for public purposes, “Rightsize” more important than “Downsize”.