Abstract: A scanner monitors a vehicle engine module's performance, such as, for example, a vehicle engine powertrain by creating and compiling performance data either in real time or based on a data post-processing schedule. A preventive maintenance or repair is suggested if the critical boundaries of a probable failure are reached.

Abstract: A system and method for initiation and control of passive regeneration (38) of a diesel particulate filter (34), and the integration of that regeneration strategy with an active regeneration strategy (36) and a strategy (40, 40A) for inhibiting passive regeneration. Passive regeneration can be initiated by driver actuation of an instrument panel device, such as a switch, while the vehicle is parked with the engine idling provided that certain conditions confirming that the vehicle is parked and the engine is at proper temperature are satisfied. Regeneration is inhibited by driver actuation of another switch for a maximum amount of time that may be shorter, or even prevented if DPF loading is too high.

Abstract: A motor vehicle diesel engine (10) has an exhaust system (16) having a diesel particulate filter (18) that traps particulate matter in engine exhaust gases passing through the exhaust system. A control system (22) processes certain data to control engine and diesel particulate filter operation. In response to driver release of the accelerator, the engine decelerates toward idling at a lower low idle speed that has been predetermined appropriate for low idling when the diesel particulate filter is not being regenerated but inappropriate when the diesel particulate filter is being regenerated because of the potential for causing on-going regeneration to become uncontrolled. When the diesel particulate filter is being regenerated, a higher low idle speed sufficiently higher than the lower low idle speed is substituted as the low idle speed set-point essentially eliminating the potential for continuation of on-going diesel particulate filter regeneration becoming uncontrolled as the engine idles.