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The solenoid valve regulates the amount of oil pumped by the cam action to either the valve or a bypass reservoir. When pressurized, the hydraulic line behaves like a solid body and transmits the lift schedule imparted by the intake cam directly to the intake valve. When the solenoid is disengaged, a spring takes over valve actuation duties.
This engine features upgrades to the variable valve timing (VVT) system, two-stage variable valve lift (VVL), a new intake manifold, new valve springs, new piston rings, new fuel injectors, new ignition coils, a cooled Exhaust gas recirculation system, lower internal friction and lower weight. It also features a higher compression ratio ...
Variable valve lift (VVL) is an automotive piston engine technology which varies the height a valve opens in order to improve performance, fuel economy or emissions. There are two main types of VVL: discrete, which employs fixed valve lift amounts, and continuous, which is able to vary the amount of lift.
The 3.3 was introduced in 1989 with the 1990 Chrysler Imperial, New Yorker, and related K-series models, and was joined in 1991 by the 3.8. Production on the 3.3 was stopped in 2010 after a run of 5,076,603 [2] engines, while the 3.8 remained in production until May 2011 in Trenton, Michigan for the Jeep Wrangler.
The new Cherokee (KL) is built on the compact U.S. wide platform, and features a nine-speed automatic, a choice of a 2.4 L Tigershark I4 with Fiat's electro-hydraulic MultiAir 2 variable valve timing and variable valve lift or a 3.2 L V6 based on the Pentastar 3.6 L V6, and front and four-wheel drive (the latter a Jeep's Selec-Terrain system). [55]
1993–97 3.5 L engines are a non-interference design, in which the valves will not collide with the pistons in the event of a timing belt failure. The 1998–2001 3.2 L, the 1998–2010 3.5 L, and the 2007–2011 4.0 L engines are interference designs.
For the 2012 model year the 3.8L V6 was replaced by Chrysler 3.6L Pentastar VVT V6 engine previously seen in the Jeep Grand Cherokee (WK2), now producing 285 horsepower, and 260 pound-feet of torque. The NSG370 remained as the manual transmission option, while the 42RLE was replaced by a 5-speed Mercedes-Benz NAG1-family W5A580 .
At launch, the sole engine on the Jeep Gladiator was the 3.6L Pentastar gasoline V6 engine with Variable Valve Timing, producing 285 horsepower, and 260 lb. ft. of torque. However, for three years starting with the 2021 model year , the 3.0L EcoDiesel Turbocharged diesel V6 engine was available as an option, producing 260 horsepower, and 442 lb ...
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