Thread: Why Does Your Engine Have More Power In The C32?
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Old Dec 5, 2008 | 06:53 AM
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Default Re: Why Does Your Engine Have More Power In The C32?
Part 4......

ENGINEERING & PRODUCTION
The foundation for creating a car with responsive sports coupe handling combined with a supple ride is a stiff bodyshell. Crossfire’s all-steel shell boasts exceptionally torsional rigidity (20,140 Nm/deg) and has been specially reinforced to bear the loads and forces generated by the unusually large wheels and tires. The fixed-roof coupe styling, sweeping rear pillars and tall bulkhead separating the passenger compartment from the luggage area, play key roles in the overall structural stiffness of the shell and in its resistance to side impacts.

Frontal crash protection is provided by a series of interrelated impact resistant features beginning with the steel beam bumper system which channels loads into the chassis’ side rails where most of the energy is absorbed. Remaining loads are transferred to the floor structure, doors and roof. The extremely stiff passenger cabin is designed to transmit loads with minimal deformation and the doors will operate even after a severe impact.
The 16 gallons (60-liter) trapezoid-shaped steel fuel tank is mounted above the rear suspension and behind the rear bulkhead for maximum protection from accident damage. Rear impact forces are directed by the bumper into the chassis side members and then into the main floor structure.
Side protection is enhanced by the fitting of a high-strength steel beam within each door, which transfers impact loads to the A and B pillars. Additional reinforcements are fitted to the upper edge of the door and along the lower belt line. The transverse stability of the passenger cabin is ensured by a massive cross member between the B pillars, and three further cross members under the windscreen, the dashboard and the seats.
The front and rear bumper systems provide protection for lamps and other safety-related equipment in impacts up to 4 MPH (6.4 km/h). Energy-absorbing foam-backed structural steel beams are covered by a body-color polypropylene molding. The beams bolt to the body shell for easy replacement in the event of damage.
The preponderance of European-built components (39 percent of the new car’s components are adapted from existing DaimlerChrysler technology) and systems selected by Chrysler Group’s AVE team for its wish list and acknowledgment that no existing DaimlerChrysler corporate plant had the capacity to build the new model, led to the decision to build Crossfire in Europe.


Three potential suppliers were formally requested to quote for the manufacture of Crossfire’s unique parts and for the assembly of completed cars in both left and right hand drive.
Bolstered partly by the fact that it already built several of the parts chosen for the new car, German coach builder Karmann GmbH was selected and rapidly established a team of 100 engineers to complete the design and production preparation of the car in collaboration with staff at the DaimlerChrysler Technical Center in Michigan.
Extensive reliance on computer modeling by both Chrysler Group and Karmann engineers was used to ensure that the final bodyshell structure met all existing and immediate future safety requirements. This excellent occupant protection performance was manufactured in Osnabrück. The first Crossfire were available in a choice of five exterior colors - Alabaster, Black, Blaze Red Crystal, Graphite metallic, and Sapphire Silver metallic, all with clear coat varnish finish.


POWER & PERFORMANCE
Fitted with Chrysler Group’s own design of air-intake and exhaust systems - to best fit the available space as well as give the car its own unique intake/exhaust soundtrack - the 3.2-litre V-6 engine powering the Chrysler Crossfire is manufactured at DaimlerChrysler’s V-engine plant in Untertuerkheim, Germany.
This all-aluminum, SOHC, 18-valve engine weighs just 140 kg and produces 215 hp (160 kW) and 229 Ft-Lbs (310 Nm) of torque. Light, responsive, smooth-revving and ultra-reliable, the 90-degree power unit delivers sparkling performance in the 3060 Lbs (1,388 kg) Crossfire.


For effortless performance, the V-6 is designed to deliver high torque across a broad band of engine speeds. While maximum torque is generated at just 3,000 rpm, over 90 percent of maximum torque is available from 2,600-to-5,300 rpm, and 98 percent is available from 3,000-to-4,500 rpm.
The combination of engine power, balanced weight distribution, suspension design and generous tire sizes enables Crossfire to deliver sensational performance on straight or winding roads. Acceleration from 0-to-100 km/h (62 mph) takes just 6.5 seconds. Crossfire has an aerodynamically-limited top speed of 150 MPH (242 km/h).


 
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