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PUSH-BUTTON PARKING: ELECTRONIC PARAING BRAKE OPERATION AND DIAGNOSIS
| 题名： | PUSH-BUTTON PARKING: ELECTRONIC PARAING BRAKE OPERATION AND DIAGNOSIS |
| 正文语种： | eng |
| 作者： | ROY DENNIS RIPPLE |
| 作者单位： | Ford dealership |
| 摘要： | Way back in the dark ages, automotive brakes were strictly mechanical. Long metal rods turned backing plate-mounted cams, which applied brittle brake shoes to steel drums. Two Hail Marys and a "Whoa, that was close!" later would hopefully bring that 1937 coupe to a stop. It was one small technological leap from the Flintstones' feet-first braking system. Until recently, parking brakes used pretty much the same technology. It was time for a change. Enter the electronic parking brake (EPB). In the infancy of EPB, manufacturers used a single electric motor that tugged on conventional parking brake cables that engaged the rear brakes. This system neglects to address the main problem with parking brakes: seized cables. New technology meets horse and buggy-like writing a computer program with a typewriter. Today's most common EPB system uses two switch-activated motors to apply and release the rear brake calipers (Figure 1). Most manufacturers use the anti-lock brake system (ABS) module to monitor and control the parking brake system. A diagnostic trouble code (DTC) is stored in the ABS module when a fault is detected, illuminating the parking brake warning indicator or a warning message in the instrument panel cluster or IPC (Figure 2). The EPB indicator also illuminates when the parking brakes are applied and when they are released. |
| 出版年： | 2023 |
| 期刊名称： | Motor age |
| 卷： | 142 |
| 期： | 1 |
| 页码： | 28-30,32-33 |
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