Despite progressively stricter emission regulations, the harmful effects on the environment resulting from internal combustion engine powered vehicles. Alternative fuels, especially neat methanol, have new found importance due to their environmental benefits. Through a research program sponsored by the U.S. Environmental Protection Agency, a direct-injected (DI) methanol glow plug engine is being developed and integrated into a passenger car. The base engine for this project is a prototype DI diesel engine, which is currently under development by Volkswagen AG. The methanol DI engine displaces 1.9L and is equipped with a turbocharger, an intercooler, and exhaust gas recirculation (EGR). The engine demonstrates basically the same favorable efficiency of a small DI diesel engine in combination with very low NOx and particulate emissions. By utilizing a specially developed oxidation catalyst, HC and aldehyde emissions are likewise maintained at a very low level. The concept of the DI methanol engine and details of the basic investigations to optimize the glow plug assisted combustion system are presented. Emphasis is placed on the development of the engine with respect to very low unburned fuel emissions, in combination with lowest possible NOx emissions. Therefore, the influence of EGR, intake air preheating, and an oxidation catalyst are presented. Possibilities to reduce HC Emissions under low-load conditions, which are critical with respect to FTP-75 testing, are also demonstrated. The operational behavior and emission characteristics of the methanol glow plug assisted engine are compared to those of a prototype DI diesel passenger car engine. The integration of the methanol engine into a passenger car, including initial chassis dynamometer test results, are discussed in combination with an evaluation of future development requirements for this engine. Finally, the planned evaluation of the engine in a passenger car.
HERNDON, VA (February 27, 2019) 鈥?Today, Volkswagen of America, Inc. announced full pricing information for the new 2019 Jetta GLI. Celebrating 35 years since the first model was introduced in 1984, today鈥檚 GLI ups the performance ante with unique styling, sharper handling, more power than ever before, and more standard features. The 2019 GLI is powered by the 2.0-liter turbocharged and direct-injection EA888 TSI engine, making 228 horsepower (achieved with premium fuel) and 258 pound-feet of torque, 18 more horsepower and 41 lb-ft more than the previous GLI model. This engine, shared with the Golf GTI, features variable valve timing on the intake and exhaust sides, as well as variable exhaust valve lift. The power is taken to the front wheels via a standard six-speed manual transmission, with an available seven-speed DSG dual-clutch automatic transmission. Automatic transmission models come standard with a Start/Stop system designed to help improve fuel efficiency.
This technology stops the engine during idle when the brake pedal is held (such as when waiting at a stop light). When the brake pedal is released, the engine restarts. EPA-estimated fuel economy for the GLI is 25/32/28 mpg (city/highway/combined) regardless of transmission choice. The Jetta GLI features an all-around independent sport suspension, with a strut-type setup at the front and a multi-link arrangement at the rear. The front brakes are shared with the Golf GTI and Golf R, using 13.4-inch diameter vented discs. Like the GTI, the GLI is fitted as standard with the VAQ electronically controlled, torque-sensing limited-slip differential that helps to eliminate understeer, as well as variable ratio electric power-assisted steering. A 35th Anniversary model is also fitted with the DCC adaptive damping system. Driving Mode Selection comes standard, and allows drivers to customize their vehicle鈥檚 dynamic behavior. This system has four modes in non-DCC vehicles: 鈥淣ormal,鈥?鈥淪port,鈥?鈥淓co,鈥?and 鈥淐ustom.鈥?Normal mode gives a balanced drive experience, while Sport is tuned for a more dynamic throttle and shift response, tighter steering, and a more spirited exhaust note. Eco mode optimizes shift points, throttle response and climate control settings for improved fuel economy.
Custom allows a driver to tailor the steering, throttle, differential, engine note, and climate control settings. The 35th Anniversary model with DCC allows the driver to adjust damping settings and also adds a fifth 鈥淐omfort鈥?mode. The 2019 Jetta GLI model will come with the People First Warranty, America鈥檚 Best Bumper-to-Bumper Limited Warranty. The warranty provides coverage for six-years or 72,000-miles (whichever occurs first), and can be transferred to a subsequent owner throughout the remainder of its duration. The 2019 Volkswagen Jetta GLI will be available in two regular trim levels鈥擲 and Autobahn鈥攁nd a 35th Anniversary Edition. It is expected to begin arriving at U.S. 25,995 and features a standard six-speed manual transmission. 26,995 and features a standard six-speed manual transmission. Standard features include 18-inch dark grey aluminum-alloy wheels with red rim accents; black roof, mirror caps and rear spoiler; 35th Anniversary Edition fender badging, scuff plates, seat tags, and front floor mats; and the DCC adaptive damping system. 29,195 and features a standard six-speed manual transmission.
