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The 2005 Jeep Grand Cherokee blends previous and future by evolving its heritage into a classy and up to date execution of an icon whereas utilizing state-of-the-art expertise to provide the very best high quality automobile doable.
“Quality is the lifeblood of any automobile and firm, however when that automobile is a Jeep, all bars are raised,” mentioned Stephen Walukas, Vice President, Corporate Quality. “Jeep homeowners know that high quality needs to be a precedence if they’ll use their automobile like no different sport-utility automobile on this planet.”
The 2005 Jeep Grand Cherokee was designed and engineered underneath the Chrysler Development System (CDS), the great, coordinated and disciplined product creation course of that improves high quality and speed-to-market whereas lowering prices and inspiring sensible innovation in new merchandise.
An emphasis in CDS is the methods engineering, design and up-front planning to keep away from time-consuming and expensive trial and error or modifications in the course of the latter phases of the product growth cycle. With CDS, all product and course of planning is accomplished and absolutely built-in earlier than manufacturing tooling begins.
The system works: For Grand Cherokee alone, guarantee repairs and bills have been lowered by greater than 60 p.c prior to now 5 years.
In exterior high quality metrics, the Chrysler Group manufacturers proceed to make dramatic year-over-year enhancements, prompting the ends in one high quality picture survey, often known as the Strategic Position Study, to indicate a four-percent enchancment – greater than every other producer within the research.
The enhancements in high quality are strengthened with the 7-year/70,000 mile Limited Powertrain Warranty on the Jeep Grand Cherokee and different Chrysler Group merchandise.
Development of the 2005 Jeep Grand Cherokee concerned the work of a whole lot of engineers together with the world-class testing amenities on the DaimlerChrysler Technology Center (DCTC) in Auburn Hills, MI, and proving grounds situated in Michigan and Arizona. These engineers logged greater than seven million miles of buyer equal driving and expertise within the automobile.
The automobile additionally benefited from a brand new $37 million Aero-Acoustic Wind Tunnel on the firm’s Technology Center, which was accomplished in the summertime of 2002, together with environmental simulators on web site. Engineers had the chance to check early, full-size clay fashions greater than 700 instances to investigate numerous configurations of the design to make aerodynamic modifications in addition to to validate cooling and wind noise objectives.
For instance, dynamic sealing (primarily, climate strips) have been strategically positioned all through the automobile because of gadgets discovered throughout testing. Exact placement of the sealing included extra lower line protection to lower wind noise; decrease protection to lower highway noise; and, higher auxiliary seals enhance water and wind administration. In addition, an elevated use of cavity foam and environmentally pleasant water-borne sound dampening have been utilized within the physique and paint sealing course of on the manufacturing stage because of the testing.
In reality, actually a whole lot of hours have been spent in take a look at labs to reduce noise, vibration and harshness (NVH). In the world of wind noise, testing revealed many discount enablers to help within the design, NVH and engineering course of. This included the final word shaping of mirrors, A-pillar geometry, thickness on facet glass parts, and seals on the door glass runs and on the higher C-pillar and elevate gate.
In addition to wind noise reductions, the group used intensive testing and knowledge to refine the brand new Grand Cherokee’s powertrain, offering each {hardware} refinements and acoustic therapies. In specific, management of essential axle assemblies – equivalent to ring and pinion mesh profiles that have been chosen for minimal gear noise – have been key elements in NVH reductions. In addition, particular person element and system balancing, in addition to tightened tolerances on the rear drive shafts, have been parts that have been carried out early within the automobile’s growth.
Grand Cherokee autos underwent excessive physique torsion and suspension articulation in checks equivalent to “AK3”. AK3 is derived from the unique take a look at used to qualify Jeep autos for navy use. Several of the brand new Grand Cherokee autos efficiently accomplished back-to-back AK3 cycles. This helps to make sure that the brand new Grand Cherokee will meet or exceed buyer sturdiness and reliability necessities.
Four separate “Lap of America” journeys have been initiated in the course of the phases of growth to validate all features of car efficiency to Jeep buyer necessities. Trips from Detroit to all areas of the United States have been taken to make sure the operate of all methods underneath all ranges of buyer use, together with trailer tow and altitude testing.
Validation journeys worldwide additionally have been carried out from – 41 levels Fahrenheit to 122 levels Fahrenheit in such places and situations as:
| WK worldwide validation journeys | |
| Chile | Cold climate validation and altitude take a look at to 14,000 ft. |
| Manitoba, Canada | Cold climate validation |
| Sweden | Electronic Stability Program growth/four-wheel drive system growth |
| Switzerland | Mountainous sturdiness testing |
| Death Valley, CA | Hot climate validation |
| Texas | Humid climate sturdiness testing |
| Moab, UT | Off-road growth/verification |
| Rubicon Trail, NV | Off-road growth/verification |
| Daniel Boone National Forest, KY | Off-road growth/verification |
All of those parts are proof that not solely is there “one” Jeep, however one sort of Jeep testing in relation to high quality: Extreme.