Issue link: http://pfmmag.epubxp.com/i/77229
FOCUS New Patrol Vehicles I Ford Police Advisory Board oil, oil filter, brake pads and brake rotors. Other common components include the bat- tery, alternator, brake calipers, rear differential unit and seats. FAQ on AWD Te PI Sedan and PI Utility feature full-time All-Wheel-Drive. Te AWD system for the PI Sedan and PI Utility is a continuously variable system that optimizes for efficiency by biasing torque to the front wheels during normal, retail-like driving. Te AWD system distributes torque before wheel slip to ensure seamless acceleration on-demand in all driving conditions. When the system identifies wheel slip, additional torque can be commanded by the system, up to 40 percent torque to the rear axle. For traction on slippery surfaces like snow or rain covered streets, all available torque can be directed to the front or rear axle. Paired with AdvanceTrac™ electronic stability con- trol, the systems work in harmony to transfer torque front-to-rear and control wheel slip from side-to-side. Tis AWD system can ac- commodate varying tire wear patterns. One of the FAQs on the PI Sedan and PI Utility is the durability and reliability of the All-Wheel Drive system. Te AWD on the re- S The under-chassis deflector plate is standard on the PI Sedan. A deflector plate is designed to withstand glancing blows. The PI Sedan has a chassis-to-ground clearance during a jounce similar to the Ford CVPI. tail vehicles is quite proven with a bit of DNA from both Volvo and Land Rover. More to the point, however, is the police package ver- sion of this sophisticated AWD system. Te durability testing on police package vehicles is twice that of a retail vehicle. Te police vehicle is put through the retail battery of proving T The PI Sedan has a trunk volume similar to the Ford CVPI, especially when you understand the CVPI trunk volume calculations don't include the full-size spare and the PI Sedan does. The PI Sedan spare is below the load floor. ground and developmental tests twice. Te PI Sedan and PI Utility have already undergone more durability testing than the venerable Ford CVPI. Te police version of AWD has three unique features to improve durability dur- ing severe use. First, the front housing of the Power Transfer Unit has a special water jacket cast into the assembly. Water is circulated in the jacket to cool the housing. Te bottom coils of the radiator – where the radiator is the coolest – are dedicated to PTU air-to-water- to-oil cooling. Second, the Power Transfer Unit uses an internal temperature sensor, not found on the retail unit. A module keeps track of oil tem- perature in the PTU and time at that tem- perature. An electric clutch pack engages and disengages as torque is transferred to the rear wheels. A time versus temp logarithm activates an Oil Minder light if and when it is time to change the PTU fluid. Tird, the Rear Differ- ential Unit on the police version uses a fluid- filled clutch pack, instead of dry clutches. Te police-only, fluid-filled RDU can withstand more severe duty. Both the NextGen Police Interceptors have a 5-year/100K-mile zero-deductible, pow- ertrain coverage. It is technically not a "war- ranty." Instead, it is an Extended Service Plan. An ESP has fewer exclusions and covers more parts and systems than a limited powertrain warranty. Te plan also includes wear and tear 34 Police Fleet Manager Jul-Aug 2012