Zhejiang Boxing Industry and Trade Co.,Ltd

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Company name:Zhejiang Boxing Industry and Trade Co.,Ltd
Address:No. 1188, Meihe Rd, Jinhua City, Zhejiang Province, 321017, China
Contact:Eric Ge
phone:0579-83930777
Phone:13484085502
Fax:0579-83930555
E-mail:sales@zjfourslar.com
Website: www.bo-xingcamshaft.com
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Camshaft Strength And Reliable Support Requirements Are High

Camshaft structure

Although the speed of the camshaft is half the speed of the crankshaft in a four-stroke engine, its speed is still high and requires a lot of torque, so the requirements for the strength and reliability of the camshaft are high. The main body of the camshaft is a cylinder with the same length as the cylinder block. There are a number of cams. The material of the camshaft is usually special cast iron, sometimes made of forged and alloy. Most of the interior of the camshaft is made into a hollow structure, which not only reduces the quality of the camshaft, but also improves the ability of the cam bearing to be loaded. The camshaft is also machined with a lubricating oil passage, which is lubricated by the camshaft, rocker shaft, and rocker arm.

Camshaft position sensor is also called synchronous signal sensor, it is a cylinder identification positioning device, input to the ECU camshaft position signal, is the ignition control of the master signal.

The camshaft position sensor acquires the position signal of the camshaft camshaft and inputs the ECU so that the ECU recognizes the cylinder 1 to compress the top dead center so as to perform sequential injection control, ignition timing control and deflagration control. In addition, the camshaft position signal is also used to identify the first ignition timing when the engine is started. Because the camshaft position sensor can identify which cylinder piston is about to reach the top dead center, it is also known as the cylinder identification sensor.

The engine computer controls the four cylinders according to the camshaft position signal and the crankshaft position signal in the order of 1-3-4-2.

When the engine computer can not receive the camshaft position signal, according to the 1,4 cylinder at the same time injection, 2,3 cylinder jet injection control the way. Because the ignition coil to produce double spark, so the engine can still start and run, then deflagration control off, ignition advance angle delayed, the output power down.

Camshaft

Is a part of the piston engine. Its role is to control the valve opening and closing action. Although the speed of the camshaft in the four-stroke engine is half the crankshaft (the camshaft has the same speed as the crankshaft in the two-stroke engine), it is usually very high in speed and requires a lot of torque, Camshaft in the strength and support requirements are high, the material is generally special cast iron, and occasionally with forgings. As the valve movement law relates to the power and operation characteristics of an engine, so the camshaft design in the engine design process occupies a very important position.

Camshaft characteristics

1). The dimensional accuracy of the bearing journal and the coaxiality between the bearing journals

2). Keyway size and position accuracy

3) The verticality of the thrust surface relative to the support journal line

4). The dimensional accuracy of the cam base circle and the coaxiality with respect to the bearing journal axis

5). Cam position accuracy

6). Cam shape accuracy (curve lift) and so on


Contact Us

Address:No,1188 , Meihe Rd, Jinhua City, Zhejiang Province , 321017,China

Tel:+86-0579-83930777

Fax:+86-0579-83930555

E-mail:sales@zjfourslar.com

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Company Info

ZHEJIANG BO XING INDUSTRY AND TRADE CO., LTD, proformly called “ZHEJIANG SIXING MACHINING CO., LTD”was founded in 1995, is located in Jinhua city, Zhejiang Province.,There are 400 kilometers from Shanghai port , and about 250 kilometers from Ningbo port in distance.
. Our company covers an area about 35000 square meters with total assets about RMB 150 million Yuan, the building area is about 27000 square meters. There are 550 employees, including more than 60 people who are senior and middle level professional persons.
The Company specialized in producing camshafts and balance shafts of car engines, motorcycle engines, general-use gasoline engines, diesel engine. the annual productivity is about 4.5 million pieces. it has a regular organization, which consists of nine functional departments,, a foundry, three machine plants in the company .
Our company has 450 sets of various types of production equipment, such as CNC cam grinding machines,, CNC lathes, CNC hobbing machines, CNC gear shaving machines, CNC cylindrical grinders, CNC milling machines,, automatic washing machine, etc. The equipment number centralized ratio is over 75%, in 2012s, we company purchese one set of auto cam grinder from Toyoda of Japan whose number is GC20M-63 .
It has enough capability for self-supporting the blank of camshafts and cast pieces. The company's foundry is equipped with a vertical-type non-pressure molding line box shot (ZZ416A) and has an annual output

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