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Ringing the changes
| 题名： | Ringing the changes |
| 正文语种： | eng |
| 摘要： | Compared to a conventional diesel bus, hybrid and electric buses are fundamentally different when it comes to producing the compressed air needed to provide the main energy source for the air braking, pneumatic suspension and door opening systems. While diesel-powered buses use engine-driven air compressors, hybrids and EVs typically feature standalone electrically driven screw or vane compressors. Known as 'e-compressors', these sophisticated systems are produced by OEMs including Knorr-Bremse (pictured above), Gardner Denver, Hydrovane and Mattei. Designed to provide constant and stable compressed air, e-compressor assemblies include compressor, electric drive motor and inverter. Unlike diesel-driven compressors that are lubricated and cooled by the same circuits as the engine, e-compressors feature a standalone lubrication system. As a result, these systems require regular oil and filter changes, in line with the compressor or vehicle manufacturer's recommendations, to ensure the intended service life of the system. |
| 出版年： | 2023 |
| 期刊名称： | Transport engineer |
| 期： | Oct. |
| 页码： | 19-19 |
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