搜狐汽车评论
——摘自搜狐网(http://auto.sohu.com)
一．当月产销分析
4月全国共生产汽车39.01万辆,比上月减少5.17％；销售汽车38.22万辆,比上月减少2.01％。
4月轿车产量比上月增长5.25％,客车产量下降19.52％，货车产量比上月减少4.36。微型货车、重型货车、中型客车、轻型客车产量比上月增加，其余车型比上月减少，其中微型客车产量下降幅度较大。
与3月相比，4月三大车型销量中轿车增加了12.56％,客车销量减少了13.90％,火车销量下降6.62％。除大型客车外，细分车型的销量都有不同程度的下降。
与上年同期相比,4月汽车产销分别增长20.49％和12.58％,其中轿车产销同比增长85.86％和63.86％；客车产销同比下降6.18％和4.40％；货车产销同比下降2.82％和9.77％。
二、累计产销量分析
1－4月，累计生产汽车141.30万辆，同比增长43.77％；销售汽车135.96万辆，同比增长38.45％。
累计产量增长幅度最大的是轿车，生产56.35万辆，同比增长113.32％；其次是货车，生产45.51万辆，同比增长18.71％；第三是客车，生产39.44万辆，同比增长17.64％。
累计销售量增长幅度最大的是轿车，销售53.95万辆，同比增长88.24％；其次是客车，销售40.81万辆，同比增长26.17％；货车销售41.20万辆，同比增长10.77％。
三、经济效益分析
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| Camshaft Gear |
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Cam gears are either pressed
or bolted to the camshaft. Although it is uncommon,
cam gears sometimes break. Inspect them for cracks.
To do this, you will need to partially disassemble
the engine.
The gear on the camshaft may
be steel for heavy-duty applications, or it may be
made of aluminum or pressed fiber when quiet
operation is a major consideration.
The gears are helical in
design. Helical gears are used because they are
stronger and also tend to push the camshaft backward
during operation to help prevent the camshaft from
walking out of the block.
Courtesy of Ford Motor
Company.
Wear in the chain,
gears, or sprockets means a timing lag, which
results in poor engine performance.
There are factory timing marks
on the crankshaft gear or sprocket and on the
camshaft gear or sprocket.
Factory timing marks can be
found on the camshaft and crankshaft sprockets.
The timing marks on all the
gears must be positioned according to the
manufacturer's instructions.
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