Yuchai YC6A Series, Руководство по эксплуатации и техническому обслуживанию

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voltage and adjust the contact. The clearance between armature iron and iron element of the
adjustor shall be 1.4
～
1.5mm.
进气加热器安装于进气管与进气弯管接合处，是当环境温度较低时，使柴油机更易于起
动而设置的辅助启动装置。其工作原理是当空气从空气滤清器进入进气管流经加热器时，已
通电发热的电热板将流过的空气进行加热，温度升高后的空气被吸入气缸使柴油机易于起动
。与配置有进气加热器的柴油机配套的工程机械应设有带预热启动的启动开关，接线时注意
与加热器两个接线柱相联接的接线端子不要与柴油机外壳相碰，以免造成短路故障。在启动
时如需进行预热启动，则应先把启动开关板至预热位置，每次预热时间应控制在
40
秒内，然
后再将开关板至启动位置，对发动机进行启动
.
Air intake heater is installed at the joint of air intake pipe and elbow pipe. When the
environmental temperature is low, the auxiliary start device could make the diesel engine
easy to start. When the air enters the intake pipe from the filter passing the heater, the platen
heater will heat the air; the diesel engine is easy to start due to the heated air in the cylinder.
Start switch with preheating start shall be provided for the construction mechanism with diesel
engine equipped with air intake heater; when connecting the wire, the terminal connected
with 2 heater terminals shall not contact the diesel engine housing to avoid short-circuit. If
preheating start is required, shift the start switch to preheating position to control the
preheating time within 40 sec each time; then shift the switch to start position to start the
engine.
柴油机根据用户的需要，可选配不同的仪表及传感器，主要有微细管膨胀式水温表、油温
表
;
油管直通式机油压力表
;
直流电流表
;
电信号机油压力过低报警器
;
电信号机油温度、冷却水温
度传感器
;
电子式转速表
;
带计时器电子式转速表
;
冷却水温度过高报警器。电子转速表的接线示
意图如（
2—33
所示）。
Different instruments and sensors can be equipped as options according to user’s
requirements, including capillary expansion thermometer, oil thermometer, oil pipe straight
pressure gauge, DC ammeter, electrical signal oil pressure too low alarm, electrical signal oil
temperature, cooling water temperature sensor, electrical tachometer, electrical tachometer
with timepiece and cooling water temperature too high alarm. The connection diagram of
electrical tachometer is shown in Fig 2-33.