Chery B11. Manual — part 47

Maintenance Manual for Chery·Oriental Son

Engine Section

9.Automatic Tensioner

作 用 力

98N-196N Operating force

98N-196N

在 98N-196N 作用下其柱塞压缩量 1mm

The trunk piston compression 1mm under

the operating force of 98N-196N

12mm 自由伸出量 12mm free overhang

储液腔 liquid store chamber

油封 Oil seal

限位环 Spacing ring

柱塞 Trunk piston

单向阀 Check valve

伸张弹簧 Expanding spring

工作腔 Working chamber

10. Air Distribution

Mechanism

排 气 摇 臂 Exhaust valve,

rocker arm

排气摇臂轴 Exhaust valve,

rocker arm

进 气 摇 臂 轴 Intake valve,

rocker arm

卡簧 Circlip

进 气 摇 臂

Intake valve,

rocker arm

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Maintenance Manual for Chery·Oriental Son

Engine Section

Automatic tensioner is to make timing belt

tensioned. In an operation cycle, the belt

tension is not constant and changing

periodically. With usage time increasing

and belt aging, tensioner may be tensioned

automatically to prevent belt sliding and

affect engine air distribution phase.

The two hollow rocker of oil hole can

neither be exchanged nor be reversely

installed.

Eight intake valve, rocker arms are divided

into group A and B without exchange. Four

exhaust valve, rocker arms are

exchangeable. The intake/exhaust valve,

rocker arms are made of aluminum metal,

which may decrease weight, reduce

crankshaft cam load, extend its life time and

improve engine performance and fuel

economics. There are oil pipe and oil

injection hole, which are supported by

hydraulic pole in intake/exhaust valve,

rocker arms. The latter will

inject incoming oil from

rocker to lubricate air

distribution mechanism.

Intake valve, rocker arm

Idler wheel

进 气 摇 臂 Intake valve,

rocker arm

滚轮 Idler wheel

支承轴颈 Bearing journal

Bearing journal

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Maintenance Manual for Chery·Oriental Son

Engine Section

弹簧上座 Upper site of springs

识别颜色 Color identification

气门弹簧 Valve spring

气门导管 Valve guide

气门油封 Valve oil seal

弹簧下座 Lower site of springs

螺旋内侧 Spiral inner side

螺旋外侧 Spiral outer side

Idler wheel rocker arm is adopted in

the rocker arm so as to reduce the

abrasion between camshaft cam and

rocker arm

Camshaft is made of

spheroidal graphite iron, of

5-point bearing and no

special bearing.

The valve spring is

non-isometry structure,

which may prevent

sympathetic vibration and

rupture. Please notice that

the color-marked should be

upwards and the

larger-distant is upwards.

Spring section is elliptoid,

which surface is shot

blasting processed to

improve fatigue resistance.

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Maintenance Manual for Chery·Oriental Son

Engine Section

气门 Valve

进气门为 1.0mm/极限为 0.5mm

Inlet valve is 1.00/limit is 0.5mm

排气门为 1.2mm/极限为 0.7mm

Exhaust valve is 1.2mm/limit is 0.7mm

气门座 Valve seat

工作面宽 0.9-1.3mm

Working surface width

0.9-1.3mm

The valve is of umbrella

structure. The intake valve is

similar to the exhaust valve,

but the size of the former is a

little bigger than the later.

Each cylinder is of

four-valve structure, which

may improve emission

efficiency, decrease weight

and inertia resistance and

extend the life time of valve

and valve seat. Besides it, it

is of benefit for spark plug

allocation, which improve

burning efficiency and

reduce injurant emission and

fuel consumption.

Valve oil seal is of steel-shelf

and rubber-ring-spring

tension structure. The duct is

made of

high-temperature-pressure-pr

ocessing powder metallurgy.

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