Both new Concorde and Intrepid engines were designed to meet year 2000 exhaust emission regulations by minimizing the output of pollutants at the engine, thereby limiting the demand on downstream control devices. Both engines produced 30 percent less hydrocarbon (unburned fuel) emissions than their 1997 predecessors. In most states and foreign markets, the engines met the federal Tier 1 emission standards. In California and states that adopted their standards, the engines met more stringent TLEV (Transition Low Emission Vehicle) emission standards by using more effective (and expensive) catalytic converters. Both engines were available in both markets.
The emission control system included the following features:
A leak detection system, similar to that used on other Chrysler vehicles since 1996, mounted close to the fuel tank on cars meeting California emission requirements. The leak detection system included a leak detection pump that lightly pressurizes the entire fuel supply system periodically to verify that vapor was not escaping. If vapor leakage exceeded the flow through a 0.040-in. (1mm) orifice, the OBD II (on-board diagnostic system) turned on the 'CHECK ENGINE' light.
The following environmentally friendly materials and processes were used on the 1998 Concorde and Intrepid:
As on the prior Concorde and Intrepid, the substrate of the interior roof system was made from sound insulating AcoustiCor®, which was primarily recycled polyethylene terepthalate (PET) soft drink bottles reinforced with glass fiber. A further refinement of the recycling process was the recycling of the AcoustiCor headliners into a new material called EcoCor® for which applications were sought.
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