Yuchai YC6A Series, Руководство по эксплуатации и техническому обслуживанию

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38
表
1-7
其它螺栓拧紧力矩推荐值
Table 1-7 Recommended tightening moment of the plug screw of other bolts
3 发动机主要结构及工作原理
Primary Structures and Working Principle of Engine
3.1 气缸体
Cylinder Block
气缸体采用整体龙门式结构，由合金灰铸铁铸造而成，用均匀的加强筋加固，整个气缸
体具有足够的强度和刚度。
The cylinder block uses an integral portal shaped structure and is made of the alloy grey cast
iron and strengthened with equally spaced reinforced ribs. The whole cylinder block has
adequate strength and rigidity due to its wider junction plane with oil sump.
气缸体设计为湿式缸套，耐磨性好。气缸套下部装有二根耐油橡胶密封圈，以防止漏水
穴蚀。
Wet cylinder sleeve is designed for cylinder block with good wearing resistance. There are
two oil resistance rubber sealing ring at the bottom of the cylinder sleeve to avoid water
leaking.
气缸体顶面有
26
个螺孔，通过气缸盖螺栓固定气缸盖。
There are 26 screw holes on the top of the cylinder body which are used to fix the cylinder
head
。
气缸体右侧（从飞轮输出端看）装有排气管、起动机、机油滤清器等。
There are air exhaust pipe, starter and oil filter on the right side of the engine (viewing from
the flywheel output end).
气缸体左侧上部安装有进气管、高压油泵等。下部装有油标尺组件，油标尺上有两条刻
线，在柴油机起动前加油时，油面应接近上刻线，柴油机运转时应特别注意油面应保持在上
下刻线之间。气缸体前端面装有飞轮壳。
Air intake pipe and high pressure oil pump are installed at left upper of the cylinder block; oil
dipstick is installed at the bottom with 2 scales on it; when filling oil before the diesel engine
starts, the oil level shall be near the upper scale; the oil level shall be kept between the upper
and lower scale when the diesel engine starts. Flywheel housing is installed at front of the
cylinder block.
螺纹直径（ mm ）
Thread diameter
(mm)
公制
Metric
system
M6 M8 M10 M12 M14
扭紧力矩
(N·m)
Tightening moment of （ N·m ）
8
～
12 16
～
20 27
～
34 61
～
68 115
～
129