CAR GARAGE | Jeep Wrangler (2012) | Wrangler Continues to offer a body-on-frame design, front and rear five-link suspension system, live axles and electronic lockers. Jeep Wrangler now offers a choice of two transmissions: a six-speed manual and a five-speed automatic gearbox. Along with a new power train, Jeep engineers have thoroughly optimized ride and sound characteristics of the Jeep Wrangler's body-on-frame design. On the outside, engine noise is barely perceptible at idle. With the new 3.6-liter V-6 engine, all accessories are mounted directly to the engine with no accessory brackets.
The Pentastar engine is extremely quiet, constructed with a high-pressure, die-cast aluminum block fitted with cast-iron bore liners and aluminum cylinder heads. The A580 automatic transmission Jeep Wrangler benefits as much as the new petrol engine, with more refined shifting and gear selection. More speeds also enable the engine to remain in the torque curve, Increasing acceleration. Also, a lower first-gear ratio in the new automatic transmission Gives the Wrangler more off-road capability via a lower overall crawl ratio. Electronic Range Select is standard for all automatic-equipped Jeep Wrangler models. Along with the proven NSG 370 six-speed manual transmission, engineered for the newest Jeep Wrangler are a new clutch housing, flywheel and long-travel clutch damper. The improvements are a result of the adaptation of the transmission to the 3.6-liter V-6 engine. The five-speed automatic transmission is produced in Kokomo, Indiana (ITP2), and the six-speed manual transmission is produced in Gaggenau, Germany.
The Jeep Wrangler is now available with more gear and axle ratios, allowing customers to optimize fuel economy and / or vehicle capability. Also, Jeep Wrangler offers towing capability up to 2.500 kg. The drive line capable of the Sport and Sahara models includes a Dana 30 front axle and Dana 44 rear axle. The Command-Trac NV241, part-time, two-speed transfer case features a 2.72:1 low-range gear ratio. The all-new 3.6-liter V-6 engine joins the new 2.8-liter turbo diesel engine with fuel-saving Stop / Start technology. The diesel engine provides power of 200 hp DIN (147 kW), a 13-percent improvement over the prior 2.8-liter diesel engines. Jeep Wrangler's diesel engine, when paired with the manual transmission, incorporates Stop / Start technology - the first application of this technology on a Chrysler Group vehicle. Stop / Start improves fuel efficiency and reduces CO2 emissions by managing the amount of time the engine runs. The engine then automatically restarts when the clutch pedal is depressed.
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