Yuchai YC6A Series, Operation & Maintenance Manual, Page: 65 / 99

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allowed to remove thethermostator when using to avoid affecting the normal working
condition of the diesel engine.
3.7 启动装置、电气系统与仪表
Start device, electrical system and instrument
电气系统原理图如图
2—32
所示。
The electric system principle is shown in Fig2-32
柴油机所用启动电机为四极四刷直流串激电动机，上述起动电机工作电压均为直流
24V
，
最大输出功率 6.6KW ，单线制负极接地（搭铁） 。电机小齿轮与飞轮齿圈的啮合用电磁铁控制
机械驱动并带有滚柱式单向离合器，以防止电机转子超速，当按下启动开关一次不能起动时，
必须等利用复位的小齿轮完全退回原来位置后，才可以进行第二次启动，连续二次启动间隔时
间应不少于
1
分钟以上，每次启动时间不应超过
10
秒，以防止电机过热损坏。决不允许在柴
油机及启动电机尚未停止转动时再次按下启动按钮，否则将会引起齿轮和齿圈的剧烈撞击而损
坏。当发动机起动成功后，应立即松开按钮，使小齿轮复位。
The diesel engine adopts 4-pole, 4-brush, DC, series motor with working voltage of DC
24V, max power of 6.6KW and single-wire negative ground (earth lead). Electromagnet
control mechanism drives the motor small gear and flywheel gear ring engagement with roller
type one way clutch to avoid over speed of motor rotor. If the motor can’t start to work when
pressing start switch once, the user should attempt the second start only after the small gear
returns completely to the original position, and the time interval between the 2 starts shall be