Elevated Low Idle Operation
提高低怠速可缩短发动机的预热时间。 提高低怠速还可防止发动机在低温天气下长时间处于怠速状态时出现过冷的情况。
发动机冷却液温度低于 70 摄氏度 (158 华氏度) 时,发动机怠速会提高到 1600 转/分。
发动机冷却液温度升至 75 摄氏度到 77 摄氏度 (167 华氏度到 171 华氏度)之间时,发动机怠速会降至低怠速水平。
如果发动机再次冷却,在冷却液温度降至 70 摄氏度 (158 华氏度)时,怠速会提高到 1600 转/分。
提高怠速图采用 2 摄氏度 (3.6 华氏度) 的滞后来提高发动机的稳定性。
Show/hide table
图 1 | g01012376 |
提高怠速图 |
满足以下条件 30 秒后,会启用提高低怠速:
- 变速箱处于空档。
- 停车制动器接合。
- 机器的行驶速度为零。
- 发动机已运转了十分钟。
满足以下任一条件时,会禁用提高低怠速:
- 油门踩下 25% 以上。
- 按下手动乙醚开关。
- 变速箱接合。
- 停车制动器松开。
如果变速箱挂回空档位置且停车制动器处于接合状态,冷态断缸会在十分钟后启用。
Caterpillar Information System:
793C Off-Highway Truck Power Train Worksheets
R1600G Load Haul Dump Power Train Electronic Control System MID 081 - CID 0650 - FMI 12
R1600G Load Haul Dump Power Train Electronic Control System MID 081 - CID 0650 - FMI 09
R2900G Load Haul Dump Braking System Brake Control Valve (Service)
R1600G Load Haul Dump Power Train Electronic Control System MID 081 - CID 0650 - FMI 02
R2900G Load Haul Dump Braking System Brake Accumulator
R2900G Load Haul Dump Braking System Brake System Troubleshooting
R1600G Load Haul Dump Power Train Electronic Control System MID 081 - CID 0638 - FMI 06
420E and 430E Backhoe Loaders Engine Air Filter Primary Element - Clean/Replace
267, 277 and 287 Multi Terrain Loaders Machine Systems Seat - Remove and Install - 267 and 277 Multi Terrain Loader
R1600G Load Haul Dump Power Train Electronic Control System MID 081 - CID 0638 - FMI 05
R1600G Load Haul Dump Power Train Electronic Control System MID 081 - CID 0638 - FMI 03
2004/02/23 Correction to Disassembly and Assembly , "Tandem and Cover - Remove and Install" {4064}
3508B Engine for Caterpillar Built Machines Elevated Low Idle Operation
2004/02/23 Correction to Disassembly and Assembly , "Tandem and Cover - Remove and Install" {4064}
789C Off-Highway Truck Daily Inspection
416D, 420D, 424D, 428D, 430D, 432D and 442D Backhoe Loaders Brake Reservoir Oil Level - Check
2003/12/01 New Fuel Filter Base Has Been Released {1262}
2003/12/01 Arctic Cartridge Pins Are Available {7217}
2005/02/21 A Clamp Increases the Sealing Capability of the Coolant Bypass Tube {1380}
2004/06/07 A New Track Roller is Available for the Cold Planer {4180}
TH220B and TH330B Telehandlers Power Train Transmission and Torque Converter - Install
247B and 257B Multi Terrain Loaders Machine Systems Bogie Wheel
2003/11/10 Flash Files are Now Available in SIS for Track Feller Bunchers {7620}