What are the consequences of a broken timing belt on the Geely Liberty Ship?

Once timing belt.

Fracture is more harmful, and will break the valves, pistons and connecting rods, resulting in the need for overhaul of the engine. One end of the timing belt is connected to the crankshaft.

A camshaft is attached at one end.

The crankshaft connects the connecting rod and the piston, and the camshaft controls when the valve opens and closes. In other words, the movement of the piston and the opening and closing of the valve are interrelated, and when the air is intake, the piston moves downward, and the intake valve must be in the open position. When compressed, the piston moves upwards and all valves must be closed.

To be able to cooperate in such an orderly and accurate way, it depends on the connection of the timing belt, which is a toothed belt, and there is an accurate position when installing, and the engine can not work normally due to a tooth, so replacing the timing belt to the tooth is the most difficult work, and the technical content is higher.

Because there is very little space in the combustion chamber, if the valve is not closed when the piston is running at the top dead center, the piston will push up to the valve. Under what circumstances will the valve from the piston to the top dead center not close? The timing belt is broken or the teeth are wrong.

The belt broke, and both the crankshaft and the camshaft were unrestrained, each spinning freely without a bit of coordination. There will inevitably be times when the timing of the valve switch is incorrect, and the piston reaches the top dead center and the valve opens just right, and the two are pressed together. The valves can be bent at the top, the top of the piston can be injured, and even the connecting rod can be bent.

So why not design it so that the valve opens and the piston goes to the top dead center, so that the two don't touch? In this case, the space in the combustion chamber is too large, and you want the same compression ratio.

The cylinders have to be very long, and the piston wastes more energy when it runs. The combustion chamber is too large, and if you want to burn properly, you also need to increase the amount of fuel injected, which will make fuel economy poor, or power will suffer.

Hello! The engine does not run normally, the engine cannot carry out air intake, compression, workmanship, exhaust, camshaft does not work, the opening of the intake and exhaust valves cannot be carried out, fuel injection, ignition time cannot be judged!

Timing matching is required to determine the position of the crankshaft and camshaft!

Hope it helps!

Geely Liberty ShipTiming beltsIn the timing casing behind the generator belt outside the engine, the timing casing needs to be removed to be visible.

The engine of the Geely Liberty Ship is a four-cylinder 16-valve MR481QA with double overhead camshaft and multi-point sequential EFI engine independently developed by Geely. Geely Liberty ships are liter naturally aspirated engines.

Liter naturally aspirated engines, liter naturally aspirated engines and liter naturally aspirated engines. Take the 2015 Geely Liberty Ship as an example, which is a small car.

The following is an introduction to the Geely Liberty Ship Engine:

Litre naturally aspirated engine: The litre naturally aspirated engine has a maximum torque of 68 hp and 88 Nm, this engine has a maximum power of 6000 rpm and a maximum torque of 3600 rpm. The engine is equipped with CVVT technology and multi-point EFI technology, and uses an aluminum alloy cylinder head and cast iron block.

Liter naturally aspirated engine: The liter naturally aspirated engine has a maximum torque of 86 hp and 110 Nm, this engine has a maximum power of 6000 rpm and a maximum torque of 5200 rpm. The engine is equipped with multi-point EFI technology and uses an aluminum alloy cylinder head and cast iron block.

Litre naturally aspirated engine: The litre naturally aspirated engine has 94 hp and 128 Nm of torque, this engine has a maximum power of 6,000 rpm and a maximum torque of 3,400 rpm. The engine is equipped with multi-point EFI technology, finch-milled and uses an aluminum finger spike alloy cylinder head and cast iron block.

The timing belt is generally replaced every 2 years or about 6w kilometers.

Since the timing belt is mainly replaced by prevention, it is generally replaced when the service life specified by the manufacturer is not reached, because once the belt is broken, it will directly affect the safety of driving.

And the specific ** of the replacement can be found online through the model matching.

Hello, owner, this replacement is about 260, thank you for your support to the car master, thank you.

First, the ignition timing does not have a great impact on the car, the combustion of gasoline in the engine must be ignited by the spark plug jumping out of the spark, to make the engine start smoothly, and burn well, the spark of the spark plug must be strong enough, but more importantly, the time when the spark jumps out must be appropriate and correct, too early and too late will affect the horsepower of the engine, the time when the spark jumps out of the spark plug is the so-called ignition timing. It is generally expressed in terms of the angle of how many crankshaft turns before the piston goes to the top dead center, such as 10° before the top dead center, rather than in time.

2. Ignition timing adjustment.

1. Adjust the gap between the power-off contacts of the distributor.

The size of the contact gap not only affects the strength of the spark, but also affects the opening and closing of the contact. If the contact gap is adjusted after adjusting the ignition timing, even if it is a small change. It will destroy the ignition time that has been adjusted, so the contact gap must be adjusted before the ignition timing adjustment, and the gap must be adjusted to 0

35～0.40 mm range.

2. Find out the position of the top dead center of the compression stroke of the first cylinder, and loosen the spark plug of the first cylinder.

Slowly shake the crankshaft, when you hear a deflating sound, it means that the first cylinder is compressing the stroke. Open the sight hole cover on the flywheel housing and slowly shake the crankshaft so that the timing mark is aligned.

3. If there is an octane number selector, it should be adjusted in"0"on the scale position.

4. Determine the position where the contact of the cut-off is just opened.

Unscrew the fixing screws of the distributor housing, and turn the shell along the direction of rotation of the distributor shaft first, so that the two contacts are in a closed position. Then turn on the ignition switch and turn the shell of the distributor in the opposite direction of rotation of the distributor shaft while facing the high-voltage wire of the ignition coil against the tie iron (about 2 3 mm) until a spark is found. Finally, tighten the set screws of the distributor housing.

5. Connect the high-voltage line according to the ignition order

Replace the fire divider, insert the first cylinder high-voltage wire into the plug-in hole where the distributor cover and the conductive piece of the distributor head are aligned, and plug in the high-voltage wire of each cylinder in the order of clockwise direction.

6. Start the inspection:

Start the engine to run to a normal temperature, accelerate suddenly, and if the engine makes a short and slight knocking sound and disappears immediately, the ignition time is appropriate. If there is no knocking sound, that is, the ignition time is late, the fixing screw of the distributor shell should be loosened, and the distributor shell should be rotated a little in the opposite direction of the distributor shaft. If the detonation sound is severe, that is, the ignition time is early, the distributor shell should be turned in the opposite direction of the above until it is suitable.

1. Adjust the gap between the power-off contacts of the distributor. Adjust that gap to 0 35～0.40 mm range.

2. Find out the position of the top dead center of the compression stroke of the first cylinder, and loosen the spark plug of the first cylinder.

3. If there is an octane number selector, it should be adjusted in"0"on the scale position.

4. Determine the position where the contact of the cut-off is just opened.

5. Connect the high-voltage line in the ignition order, and plug in the high-voltage line of each cylinder in the order of clockwise direction.

6. Start the inspection, start the engine to run to a normal temperature, and accelerate suddenly, if the engine makes a short and slight detonation sound and disappears immediately, the ignition time is appropriate.

Timing belt is an important part of the engine valve system, through the connection with the crankshaft and with a certain transmission ratio to ensure the accuracy of the intake and exhaust time. The belt is used instead of gears because the belt is quiet, has little variation and is easy to compensate. Obviously, the life of the belt is definitely shorter than that of metal gears, so it is necessary to replace the belt regularly.

Function] plays a role in connecting the upper and lower parts, the upper connection is the timing wheel of the engine cylinder head, and the lower connection is the crankshaft timing wheel; The timing wheel is connected to the camshaft, which has a cam on it, and its contact point is a small rocker arm, which generates pressure through the power brought by the timing belt and plays the role of jacking.

Product History] Timing belts first appeared in the 60s and are used in most 4-cylinder vehicles and are increasingly used in V6 engines. Timing belts were originally used on cam overhead engines, where they are more vulnerable to damage than traditional timing chains.

It will not break, the timing belt will be too tight and snoring, and if it is too loose, there will be a crackling sound when refueling and refueling. If you have just changed the timing belt is too tight, it is normal for you to get better after a while. All cars with timing belts are the same, regardless of the model.

Hello, the timing belt is too tight and it will break.

The adjustment method of ignition timing is:

l) To adjust the contact clearance of the breaker, the contact clearance of the breaker should be adjusted first. Because the size of the contact gap of the breaker not only affects the strength of the high-voltage spark, but also affects the ignition time.

When the gap between the contacts of the breaker is large, as soon as the cam is contacted, the contact of the breaker is opened, the ignition time is advanced, and the closing time of the breaker contact is shortened, so that the rough current of the primary electric book is reduced, the secondary voltage is reduced, and the spark plug electric spark is weakened. On the contrary, the contact gap of the breaker is small, and the ignition time lags.

2) Shake the piston of the first cylinder to the position where the ignition begins at the end of the compression stroke (according to the mark on the flywheel or the control screw of the timing gear cover. There is a protruding part of the center at the end of the distributor shaft, and it should be noted that it is correctly embedded with the recessed part of the center, that is, the ignition timing position), at this time, the position of the distributor cam should be just the contact jack open, and the electrode of the fire distributor head is opposite to the distribution electrode of the first cylinder.

3) Loosen the clamping bolt of the distributor shell, rotate the distributor shell, first close the contact of the breaker to eliminate the gap, and then rotate the shell along the direction of rotation of the distributor shaft, so that the contact of the breaker is just opened, and the shell can be fixed.

4) Install the distributor head and distributor cover, and insert the first cylinder high-voltage wire in the plug-in hole pointed by the distributor.

5) According to the specified ignition sequence, plug in the high-voltage lines of the remaining cylinders along the rotation direction of the distributor shaft.

6) Start the engine to make the water temperature rise to 70-80, and then suddenly open the carburetor throttle to accelerate easily, and you can hear a slight metal knocking sound. If there is no knocking sound and acceleration is difficult, it means that the ignition is too late; If there is a sudden acceleration and the metal knocking sound is obvious, it means that the ignition is too early and should be adjusted again. At this time, the distributor shell can be rotated or the adjustment nut can be rotated to make the distributor reverse to ignition advance or make the distributor turn to ignition delay.