Diesel Engine In Jeep Wrangler

- Desember 20, 2017

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The Jeep Wrangler is a compact and mid-size (Wrangler Unlimited models) four-wheel drive off-road vehicle manufactured by Jeep, currently in its third generation.

The Wrangler is arguably an indirect progression from the World War II Willys MB through the Willys civilian Jeeps (Jeep CJ) of the mid-1940s through 1980s that were produced by Kaiser-Jeep and by American Motors Corporation (AMC). Neither AMC nor Chrysler (after it purchased AMC in 1987) have claimed that the Wrangler was a direct descendant of the original military model.


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Background

Outwardly resembling the Jeep CJ-7, the Wrangler, which was formally announced in February 1986 at the 1986 Chicago Auto Show, was based on a new set of design parameters. "The product philosophy behind the two vehicles" François Castaing (AMC VP of Product Engineering) explained, "is completely different". Just like the Willys MB and the Jeep CJ, Wranglers continue to use a separate body and frame, rigid solid axles both front and rear, a fold-flat windshield, and can be driven without doors. But its suspension, drivetrain, and interior were borrowed from the new Cherokee (XJ) model.

The Wrangler debuted in 1986 as a new model after discontinuance of the famous Jeep CJ series. It was revised in 1996, and completely redesigned in 2006. In addition to the model name Wrangler, each model received a designation corresponding to its generation: YJ (1986-1995), TJ (1997-2006), TJU's (commonly known as LJs- 2004-2006 Unlimited models, or YJL, in the Egyptian owners manual.), JKU (2007-2017 Unlimited models) and JK (2007-2017), and the latest JL model, introduced for the 2018 model year. Foreign military versions of the Wrangler have carried the J8 designation which was initially dubbed TJL when first produced at Arab American Vehicle's Egyptian plant.

Jeep YJ models were manufactured between 1986 and 1995 at Brampton Assembly, and subsequently at the Toledo South Assembly plant. A major difference in the 1987-1995 models were the rectangular headlights, which reverted to rounded ones in the TJ and then JK versions. In 2006, Wrangler production was moved to Toledo Complex. Post-2006 Wranglers were set apart from their predecessors by the angle of the grille. In all previous models, the grille was flat and even with the front fenders. The newer Wrangler was constructed with a grille which angled out from the top, and then continued in a straight line from the midway point, toward the bottom. This decreased the hood length, while increasing the length of the fenders. In more recent models, this angle has been lowered more toward the bottom of the grille.

In Egypt, the YJ was produced as well as a long wheel-base version, dubbed LJ (or labeled as YJL in Egypt's Owners Manual), and which has retained the 2-door design. The YJL is considered as the first predecessor of the JK's long wheel-base by continuing as TJL (aka J8) which has directly inspired the JK's 4-door.

There is a Jeep Wrangler Pickup coming into production in 2017.


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YJ (1986-1995)

Development of a potential CJ-7 replacement was green-lighted in 1982, with engineering and design work (under Chuck Mashigan) commencing. After approval earlier in 1983, a final design freeze occurred by the fall of 1983, with CJ-7 based mules being built in late 1983 and the first production body test prototypes in the spring of 1984. By late 1985, development concluded, as the transition from pilot to series production began. In February 1986, the 1987 Jeep Wrangler was unveiled, entering production that March, and going on sale on May 13, 1986.

The Jeep YJ, sold as the Wrangler in the United States, replaced the Jeep CJ in 1986 and was built in Brampton, Ontario, Canada, until the plant closed on April 23, 1992. Production was then moved to Toledo, Ohio, using the same plant that produced the Willys Jeeps during World War II.

American Motors Corporation (AMC) had designed the new Jeep to be more comfortable on-road in an attempt to attract more daily drivers. It was an entirely new design with a wider track, slightly less ground clearance, and more comfort. The YJ still had leaf spring suspension similar to that of the CJ - however the springs were wider, and the YJs sported trackbars and swaybars for improved handling. Despite the new grille, the body is very similar to that of the CJ-7, and it is interchangeable with some major modifications. The YJ also was given a larger windshield over the CJ. The YJs are easily identifiable due to the rectangular headlights and the fact that the wiper blades rest on the windshield, giving this version a distinctive look. The blades rested on the windshield due to the now wider arc of the blades to clean the larger windshield. These two changes were later removed when the TJ was launched 1996. 632,231 YJs were built through model year 1995, although YJs were still sold into mid-1996, bringing the total production number to 685,071 units. Despite its similar look to the Jeep (CJ) its design was new from the ground up and had more in common with the newer downsized Cherokee (XJ) model.

The YJ used a 2.5 L AMC 150 I4 or optional 4.2 L AMC 258 I6 until 1990. Starting in 1991, a fuel-injected 180 hp (134 kW) 4.0 L AMC 242 variant replaced the 112 hp (84 kW) 4.2 L 258 CID straight-6. The NP207 transfer case was used only for 1987 and replaced by the NP231.

The roll cage was extended in 1992 to allow for rear shoulder belts, and anti-lock brakes were added as an option the next year. An automatic transmission option for 4-cylinder Wranglers came in 1994, along with a center high-mounted brake light. Also, in 1992, the Sahara debuted.

In 1994, the slave cylinder on manual transmissions was moved outside of the transmission's bellhousing to allow for easier replacement, and in 1995 the Dana 30 larger U-joints were used [front axle U-joints (297x) and rear pinion U-joint (1330)]. For the 1992 model year, the YJ switched over to an electronic speedometer, outmoding the cable speedos on older YJs.

There were no 1996 model year Jeep Wranglers. YJs produced in early 1996 were sold as 1995 model years, but featured a few new parts not seen on any earlier YJ. This included the new TJ bumpstops on the hood (rubber boots vs the traditional U-bars), reinforced tailgate hinges, and some even had rear TJ bumpers. Some also got the newly tuned I6 that was designed to run quieter in preparation for the TJ.

Top options for YJ were the same as those offered on TJ. A Soft top with "half doors", featuring soft plastic zipper windows came standard (windows could be removed completely from these doors). Full-frame doors with conventional glass windows were optional on soft-top models. Hard tops with rear wiper and defroster were optional, but came standard with full-framed doors. The YJ featured large mirrors with manually adjustable arms on half-door models, while full-framed doors received smaller adjustable mirrors with fixed arms (which were mounted further away from the door corner, compared to the larger-style mirrors). Depending on year and interior color, Jeeps could be had with the top colors in black, white, tan and gray. Roll-bar padding normally matched top color, with the exception of white tops.

Powertrain

YJ Wrangler Islander

From 1988 to 1993 Jeep produced an options package known as the "Islander". Several colors were offered, such as Bright Red, Pacific Blue, Sunset Yellow, Teal, and White, and both engines were offered. Features of the package are as follows:

  • Body-color wheel flares and side steps
  • Sunset graphics on lower body and hood
  • Islander logo on front fenders and spare tire cover
  • Wrangler decals or embossments
  • Optional 20 gallon fuel tank
  • Gray interior and highback seats
  • Optional 5-spoke Alloy Wheels
  • Floor carpeting
  • Center console with cupholders
  • Full or half doors

YJ Wrangler Renegade

From October 1990 until 1994, Jeep produced an options package on the YJ Wrangler listed as the "Renegade Decor Group". Vehicles were shipped as optioned Wranglers to American Specialty Cars (ASC) in the Detroit area, where the Renegade Decor Package was installed, then shipped back to Jeep for delivery to dealers. Renegades all have a small sticker on the driver's side door, right above the latch denoting the visit to ASC. Initially, all Renegades were white, black, or red. Blue and bronze were added for the 1992 and 1993 model years, respectively. The Renegade Decor Group was a $4,266 option over a base Wrangler for 1991 and included special alloy wheels, exclusive body flares, along with many other features.

Contents of the Renegade Decor Package

  • 4.0 Liter (242 CID) I-6 Engine
  • 30x9.5R15 LT OWL Wrangler A/T Tires
  • Exclusive 5-hole aluminum wheels, 8 inches wide
  • Full size spare tire
  • Highback seats with Trailcloth Fabric
  • Off-road gas shock absorbers
  • Power steering
  • Fog lamps (integrated into the front fenders)
  • Leather-wrapped steering wheel
  • Renegade striping (door letters)
  • Floor carpeting (full width, and on insides of body tub)
  • Floor mats, front
  • Extra capacity fuel tank (20 US gal.)
  • Color keyed fender flares with integrated bodyside steps
  • Front and rear bumperettes (plastic)
  • Center console with cup holders
  • Courtesy and engine compartment lights
  • Interval wipers
  • Glove box lock

A hardtop was a $923.00 option and came with a mandatory rear window defroster at $164.00. Although soft-top models came standard with "half doors", full framed doors with glass windows were an option, and as on all 6-cylinder Wranglers, air-conditioning was also an option. Renegades typically had the tilt steering wheel ($130.00) and an AM/FM/cassette stereo radio ($264.00). A column shift automatic was also an available option, but it was not popular.

Trim levels

North American YJ/Wranglers were available in the following standard trims.

  • Base: also referred to as "S" & "SE" at different points in the model run; first few years the back seat and rear bumperettes were optional, some years the 6cyl engine was an option, other years only the 4cyl was available in the "Base" model. An A/M radio (later AM/FM stereo) with two speakers came standard, as did high-back vinyl bucket seats and a heater and blower. An AM/FM stereo, cassette player, and air conditioning were optional. In 1986, a basic Wrangler Base cost $8,995 MSRP.
  • Laredo: Chrome grille, bumpers, and trim, hard top and hard full doors, tinted windows, faux leather interior, body color fender flares and alloy wheels. An AM/FM stereo with cassette player, rear speaker sound bar, air conditioning, rear removable bench seat, and high-back cloth bucket seats all came standard.'LAREDO' decals adorned the hood on both sides or on the lower front fenders as part of the side stripes.
  • Islander: See Islander
  • Sport: which featured "sport" graphics and, beginning in 1991, a 4.0 L 242 CID inline-6-cylinder engine. An AM/FM stereo with two speakers and a rear removable bench seat came standard. A cassette player, rear speaker sound bar, cloth high-back bucket seats, and air conditioning were optional.
  • Sahara: which came standard with most available options, including body color fender flares and steel wheels, also included with the Sahara edition are special green trail-cloth seats with storage pockets, interior door panels with pockets, front bumper mounted fog lamps, and plastic ends on the front bumper). An AM/FM stereo with cassette player, rear speaker sound bar, unique cloth-and-vinyl high-back bucket seats, rear removable bench seat, exterior color steel wheels, and air conditioning were all standard on this model.
  • Renegade: See Renegade. 'Sahara Edition' decals adorned both front fenders.
  • Rio Grande: Available in champagne gold, moss green, white, along with the rare colors aqua pearl metallic, and Bright Mango; with a Pueblo themed interior trim package. This trim was only available in 1995, and was added to spice up the base 4-cylinder Wrangler 'S' models A cassette player, rear speaker sound bar, and cloth high-back bucket seats came standard, and air conditioning and alloy wheels were all available on this model. Red-and-orange 'Rio Grande' decals adorned both rear fenders.

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TJ (1996-2006)

Introduced in 1996 as a 1997 model, the second-generation Wrangler introduced the round headlamps from the classic Jeep models. Late in its lifecycle, a long-wheelbase Unlimited model was introduced.


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JK (2006-2018)

The third-generation Wrangler was released for the 2007 model year. Along with the traditional 2-door model, a 4-door Unlimited model was released.


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JL (2017 -)

The fourth-generation Wrangler was unveiled in late 2017 as a 2018 model. The JL features a host of new features including: additional powertrains over the Pentastar V6, a redesigned transmission, new fold-flat windshield and soft top designs, and a more modern interior.


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Recognition

The Jeep Wrangler received the 2009 Best Resale Value Award from Kelley Blue Book (KBB) in the sport utility vehicle category. In 2012 and for 2013, it was also awarded the Best Resale Value Award from Kelly Blue Book in the compact sport utility vehicle category. The Wrangler also holds the Models to Best Hold Its Value recognition from Kelley Blue Book for 1998, 1999, 2003, 2011, and 2012.

The 2011, 2012, and 2013 Jeep Wranglers have received Canadian Black Book's Best Retained Value Award for the compact SUV category.

In 2007, The Jeep Wrangler had set the Guinness World Record for highest altitude attained by a four-wheeled vehicle after ferrying Matthias Jeschke and his Extrem Events adventure team up Chile's Ojos del Salado, the highest volcano on Earth (record beaten the same year by a Suzuki Samurai ). The trek from base camp to the world record height ran from March 7 to March 13, when the team's pair of Wrangler Rubicon Unlimiteds checked in at 6,646 metres (21,804 ft).

In 2007 and for 2013, the magazine Four Wheeler awarded the Jeep Wrangler with its Four-Wheeler of the Year Award and in January 2010, they awarded the Jeep Wrangler Unlimited Rubicon its title of 4x4 of the Decade.

In 1997, 2007, and 2012, the magazine Petersen's 4-Wheel & Off-Road awarded the Jeep Wrangler with its 4x4 of the Year award.

The 2008 edition of Forbes Autos lists the four-wheel-drive convertible Jeep Wrangler at number four among the top ten vehicles with the highest resale value.

In May 2009, Business Week magazine named the Wrangler One of the Most Iconic Cars of the Last 20 Years.

Electric Wrangler

In September 2008, Chrysler Vice Chairman Tom LaSorda unveiled a range-extended electric 4-door Wrangler along with similarly engineered Town and Country minivan and a purely electric sports car. The Wrangler would have a 40-mile (64 km) range before a gas engine starts and begins supplying additional electricity. However, in November 2009 Fiat SpA disbanded Chrysler's ENVI electric car division and dropped these models from future product plans.


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Source of the article : Wikipedia



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