General Information (Air Inlet and Exhaust System)
这些发动机使用三个带有可调连杆的执行器来控制燃料进口、排气旁路（废气旁通阀）和进气（阻气门）。 电子控制模块（ECM）控制这些功能。 如果出现发动机性能降低或操作问题，请检查以下调整和操作是否正确：
- 执行器和执行器连杆
- 液压油压力正确
- 燃料质量设置（Btu 和比重）正确
- 预燃室的针阀设置正确
- 进气门间隙正确
- 排气阀间隙
- 气体进入阀间隙
- 废气排放
当调整燃料质量或针阀时，始终使用废气分析器工具。 调整时，始终将控制系统置于"预燃室标定"模式。
如果进气或排气系统不通畅的话，发动机的性能就会降低。
空气流过空气滤清器会遇到阻力。 阻力不得超过 3.74 kPa (15 in H2O)。
背压是出口弯头的排气压力和大气压力的压力差。 排气背压不得超过 3 kPa (12 in H2O)。
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