What is the valve clearance of the 2011 Changan CX20? I couldn t find it no matter how I looked for

The two-time adjustment of the valve clearance can be adopted, that is, the entire valve clearance adjustment can be completed by turning the crankshaft twice.

For example, the work sequence is a 4-cylinder engine, open the cylinder cover cover, rotate the crankshaft, and watch the movement of the 4-cylinder valve, when the intake and exhaust valves have overlapping movements, it is the exhaust top dead center of the 4-cylinder.

At this time, the 1 cylinder is at the top dead center of compression, and the intake and exhaust valves of the 1 cylinder, the intake valve of the 2 cylinders, and the exhaust valves of the 3 cylinders can be adjusted, and these valves are absolutely closed.

Rotate the crankshaft 360 degrees, find the compression top dead center of the 4 cylinders according to this method, and adjust the rest of the valves.

When adjusting, while tightening the adjustment screw, insert the valve stem end and the rocker arm back and forth with a thick gauge, feel that there is a slight resistance, and then check again until it is suitable, and be sure not to use too much force.

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Summary. Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.

Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.

Are you talking about the valve timing of this car? Please take a picture of that nameplate and send it to me, and then I will send you that information in the form of **.

Hello? How did you send the valve of this car?

Hello? How did you send the valve of this car?

Well, sorry, why didn't you understand the valve when you said to me?

If you say how to install the belt timing belt, I can provide it, but how is the valve right? I don't understand until now.

Hello, you have a lot of gas tickets for this car.

Hello, you have a lot of gas tickets for this car.

Summary. How is the Changan CX20 valve.

Hello open cylinder head 2Remove the spark plug 3Turn the crankshaft so that the piston of the 1st cylinder is at the top dead center 4Observe whether the valve of a cylinder is completely cracked, if it is, you can adjust the valve, if it is not closed, it is to turn the crankshaft spike and shout 360 degrees.

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For your information: The comparison between SOHC and DOHC is as follows:

The mechanical structure of the single camshaft is simple, there are fewer big problems, and the torque is larger at low speed. The opening time of the intake and exhaust valves of the single camshaft is fixed, but the mechanical structure is simple, the maintenance is easy, and the economy and fuel economy are the advantages of the single camshaft.

The double camshaft can exert a relatively large horsepower because it can change the valve overlap angle, but the torque at low speed is relatively insufficient, and because of the complexity of the mechanical structure, it will cause certain difficulties in maintenance. The technology of the double camshaft comes from racing cars, and the main thing is that the time difference between the intake and exhaust valves can be controlled.

There is no such thing as absolute good or bad for single and double convex, but the structure is different.

As can be seen from the above.

SOHC has advantages in torque and fuel consumption, so it is more suitable for urban driving, and DOHC has advantages in horsepower, so it is more suitable for high-speed driving imitation vertical driving.

Go ahead and dig a little deeper.

SOHC=Single Camshaft=SingleOverHeadCamshaftEngine=There is only one overhead cam placed on the cylinder block, which drives both the suction and exhaust valves.

DOHC=Twin Camshaft=DoubleOverheadCamshaftEngine=There are two overhead cams placed on the cylinder block. The first lifting side is used to drive the suction valve, and the second is used to drive the exhaust valve.

The valve is responsible for feeding air to the engine cylinders and expelling combustion exhaust gases from the engine cylinders.

At present, many domestic car modification shops, claiming to be able to change the angle of the single camshaft, improve the high horsepower, in the modification, someone has proposed, and after the modification claimed that the horsepower is increased very much, etc., even at that time was very interested.

But in fact, I learned from the communication with the automotive professional design engineer that if the angle of the camshaft of the single cam is increased, it can actually increase the time of intake and exhaust to increase the breathing volume of the engine, and increase the horsepower to achieve a similar effect to DOHC, but the sequelae is that the wear of the camshaft and valve rocker arm will be aggravated, and the vibration will be more severe. Although there are complete or machined modified increased angle camshaft kits in the outside tuning shop, it is not recommended that everyone modify this kind of thing.

Beijing Changan Automobile is a first-class car, using a MacPherson independent suspension car suspension, and then the suspension system is a torsion beam non-independent suspension, and the chassis height is centimeters.

Chassis height (i.e. minimum ground clearance) is a term that means the minimum distance between the chassis of the car and the level road surface in the case of heavy transportation. The utilization of automobiles is reflected in this statistic. In the past specification, the minimum ground clearance was clearly stipulated, about not less than 150mm, but it is not known that this specification balance has long been abolished.

Everything is normal, the chassis height of the family car, the low is not less than 110mm, the high is not more than 150mm, from the family car, the larger the chassis height (generally refers to more than 13 cm), the car is easier to get rid of all kinds of ground, but in the speed mode, it will endanger reliability; If the chassis height is less than 110 mm, it will have smooth handling on the fast, but the use function of the car is weak. Nowadays, some cars are equipped with air suspension, which can automatically adjust the chassis height anytime and anywhere, meeting the requirements of riders who want to be reliable and reliable.

The minimum ground clearance data information and similar models of Beijing Changan CX20 are, Senova X35 (170mm), **Mercedes-Benz GLC (180mm), BYD F3 (170mm), Tiguan (180mm), Oliver (175mm), if you are interested, you can pay attention to it.

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