The rod-camshaft friction pair is one of the most important friction pairs in diesel engines. Once the wetting is not good, the abnormal damage to the friction vice will lead to obvious common faults such as the inability to control the valve variable valve timing, and even the inability to open the valve and the inability to operate the diesel engine.
Struts can be divided into two categories: mechanical struts and hydraulic struts. In each category, there are many structural forms, such as flat uprights and liquid uprights. One end of the rod is in contact with the cam, and the other end is in contact with the valve. Its function is to transmit the thrust of the cam to the valve.
Generally speaking, the materials for making engine columns include carbon steel, diamond nickel-chromium alloy cast iron and cold pole alloy cast iron, etc. I hope everyone can recognize this.
When the engine is in idle, in the middle of the engine.A click will be heard on one side of the valve hydraulic rod. The sound law is not obvious. After increasing the engine speed, the sound weakens or becomes disordered, and disappears when driving at high speed. The cold car is more obvious, and the sound of the hot car gradually weakens. If the fire is cut off, the sound will still exist.
1. Symptoms of hydraulic valve shaft breakage: abnormal valve noise in the early stage of engine start-up, and the valve has been abnormal noise during engine operation, and the abnormal sound of the valve changes with the change of engine temperature. The following is an analysis of the specific symptoms of valve hydraulic column failure.
2. The oil level of the engine oil is too high or too low, causing the oil with bubbles to enter the hydraulic column, forming an elastomer and producing the sound of the valve foot.(2) The oil pressure is too low, and there is a lack of lubricating oil in the hydraulic column, causing the air to enter the hydraulic column and produce the sound of the valve foot.
3. Abnormal sound will occur after the valve hydraulic roof column is broken, and the abnormal sound is the most serious in the cold state. During the idling operation of the engine, there will be a sound in the valve hydraulic pillar. This sound is very irregular and very obvious in the cold state. During high-speed driving, this abnormal sound will gradually disappear.
4. Symptoms of broken valve hydraulic toppost. After the valve hydraulic toppost is broken, there will be a strange sound. In the state of a cold car, the abnormal sound is the most serious. In the process of idling, the valve hydraulic top pillar will make a noise. This sound is very irregular. The car is very clear in the cold state. Show, in the process of high-speed driving.
1. The function of the valve column is to transmit the thrust of the cam to the putter or valve rod, and bear the lateral force applied when the camshaft rotates.The upright column can be divided into two types: ordinary upright column and hydraulic upright column. 1) Ordinary valve column. The column adopted by the valve overhead gas distribution mechanism has two structural forms: cylinder type and roller type, as shown in Figure 3. As shown in 21.
2. There are three forms of column: bacterial, cylinder and roller. The problem of loose valve closure caused by thermal expansion of the hydraulic column can be solved by reserving the valve gap. However, due to the existence of the valve gap, the gas distribution mechanism will produce an impact and make a noise when working.
3. The bar is used to transmit the thrust of the cam to the putter or valve, while also bearing the lateral force exerted by the cam and transmitting it to the engine cylinder block or cylinder head. Commonly used materials for uprights include medium-carbon steel, alloy steel, alloy cast iron and super-cooled cast iron. Ordinary supports are generally used for the gas distribution mechanism under or in the camshaft.
The function of the upright column is to transmit the thrust of the cam to the putter or valve rod, push the putter or valve to overcome the action force of the valve spring to move, and at the same time bear the lateral force applied when the camshaft rotates.
One end of the rod is in contact with the cam, and the other end is in contact with the valve. Its function is to transmit the thrust of the cam to the valve.
The function of the upright is to transmit the thrust of the camshaft to the putter (or valve rod) and bear the lateral force applied when the camshaft rotates. The upright column is equipped with an adjustment screw at its top to adjust the valve clearance.
1. With the operation of the engine, under the action of oil pressure, the plunger cavity in the upright is filled with oil, and the plunger moves downwards, which increases the effective working length of the upright and reduces the valve gap. Because the force generated by the plunger in the boom is very small, it cannot produce the force of the compression valve spring, so when the gap between the boom and the valve is very small, the boom will no longer move.
2. One end of the bar is in contact with the cam, and the other end is in contact with the valve. Its function is to transmit the thrust of the cam to the valve.
3. With the rotation of the engine, under the action of oil pressure, the plunger cavity in the column is filled with oil, and the plunger goes down, increasing the effective working length of the column and reducing the valve gap. Because the force generated by the plunger in the straightener is very small, it cannot cause the force of compressing the valve spring, so when the gap between the straightener and the valve is very small, the straightener does not move.
4. The engine hydraulic lever (column) is composed of column body, hydraulic cylinder, plunger, one-way ball valve, one-way valve spring and plunger return spring and other components. The outer cylindrical surface of the straight cylinder is processed with a circular oil groove, the inner side of the top is processed with a key-shaped oil groove, and the middle inner cylindrical surface is used to install the hydraulic cylinder.
*Locating specialized suppliers by HS code-APP, download it now, new users will receive a novice gift pack.
The rod-camshaft friction pair is one of the most important friction pairs in diesel engines. Once the wetting is not good, the abnormal damage to the friction vice will lead to obvious common faults such as the inability to control the valve variable valve timing, and even the inability to open the valve and the inability to operate the diesel engine.
Struts can be divided into two categories: mechanical struts and hydraulic struts. In each category, there are many structural forms, such as flat uprights and liquid uprights. One end of the rod is in contact with the cam, and the other end is in contact with the valve. Its function is to transmit the thrust of the cam to the valve.
Generally speaking, the materials for making engine columns include carbon steel, diamond nickel-chromium alloy cast iron and cold pole alloy cast iron, etc. I hope everyone can recognize this.
When the engine is in idle, in the middle of the engine.A click will be heard on one side of the valve hydraulic rod. The sound law is not obvious. After increasing the engine speed, the sound weakens or becomes disordered, and disappears when driving at high speed. The cold car is more obvious, and the sound of the hot car gradually weakens. If the fire is cut off, the sound will still exist.
1. Symptoms of hydraulic valve shaft breakage: abnormal valve noise in the early stage of engine start-up, and the valve has been abnormal noise during engine operation, and the abnormal sound of the valve changes with the change of engine temperature. The following is an analysis of the specific symptoms of valve hydraulic column failure.
2. The oil level of the engine oil is too high or too low, causing the oil with bubbles to enter the hydraulic column, forming an elastomer and producing the sound of the valve foot.(2) The oil pressure is too low, and there is a lack of lubricating oil in the hydraulic column, causing the air to enter the hydraulic column and produce the sound of the valve foot.
3. Abnormal sound will occur after the valve hydraulic roof column is broken, and the abnormal sound is the most serious in the cold state. During the idling operation of the engine, there will be a sound in the valve hydraulic pillar. This sound is very irregular and very obvious in the cold state. During high-speed driving, this abnormal sound will gradually disappear.
4. Symptoms of broken valve hydraulic toppost. After the valve hydraulic toppost is broken, there will be a strange sound. In the state of a cold car, the abnormal sound is the most serious. In the process of idling, the valve hydraulic top pillar will make a noise. This sound is very irregular. The car is very clear in the cold state. Show, in the process of high-speed driving.
1. The function of the valve column is to transmit the thrust of the cam to the putter or valve rod, and bear the lateral force applied when the camshaft rotates.The upright column can be divided into two types: ordinary upright column and hydraulic upright column. 1) Ordinary valve column. The column adopted by the valve overhead gas distribution mechanism has two structural forms: cylinder type and roller type, as shown in Figure 3. As shown in 21.
2. There are three forms of column: bacterial, cylinder and roller. The problem of loose valve closure caused by thermal expansion of the hydraulic column can be solved by reserving the valve gap. However, due to the existence of the valve gap, the gas distribution mechanism will produce an impact and make a noise when working.
3. The bar is used to transmit the thrust of the cam to the putter or valve, while also bearing the lateral force exerted by the cam and transmitting it to the engine cylinder block or cylinder head. Commonly used materials for uprights include medium-carbon steel, alloy steel, alloy cast iron and super-cooled cast iron. Ordinary supports are generally used for the gas distribution mechanism under or in the camshaft.
The function of the upright column is to transmit the thrust of the cam to the putter or valve rod, push the putter or valve to overcome the action force of the valve spring to move, and at the same time bear the lateral force applied when the camshaft rotates.
One end of the rod is in contact with the cam, and the other end is in contact with the valve. Its function is to transmit the thrust of the cam to the valve.
The function of the upright is to transmit the thrust of the camshaft to the putter (or valve rod) and bear the lateral force applied when the camshaft rotates. The upright column is equipped with an adjustment screw at its top to adjust the valve clearance.
1. With the operation of the engine, under the action of oil pressure, the plunger cavity in the upright is filled with oil, and the plunger moves downwards, which increases the effective working length of the upright and reduces the valve gap. Because the force generated by the plunger in the boom is very small, it cannot produce the force of the compression valve spring, so when the gap between the boom and the valve is very small, the boom will no longer move.
2. One end of the bar is in contact with the cam, and the other end is in contact with the valve. Its function is to transmit the thrust of the cam to the valve.
3. With the rotation of the engine, under the action of oil pressure, the plunger cavity in the column is filled with oil, and the plunger goes down, increasing the effective working length of the column and reducing the valve gap. Because the force generated by the plunger in the straightener is very small, it cannot cause the force of compressing the valve spring, so when the gap between the straightener and the valve is very small, the straightener does not move.
4. The engine hydraulic lever (column) is composed of column body, hydraulic cylinder, plunger, one-way ball valve, one-way valve spring and plunger return spring and other components. The outer cylindrical surface of the straight cylinder is processed with a circular oil groove, the inner side of the top is processed with a key-shaped oil groove, and the middle inner cylindrical surface is used to install the hydraulic cylinder.
*Advanced commodity classification analytics
author: 2024-12-24 01:56Non-GMO products HS code classification
author: 2024-12-24 00:40HS code referencing for port authorities
author: 2024-12-23 23:51Industry-specific trade tariff analysis
author: 2024-12-23 23:33Brazil import trends by HS code
author: 2024-12-23 23:20HS code mapping in government tenders
author: 2024-12-24 01:36Comprehensive customs ruling database
author: 2024-12-24 01:24Trade data for market entry strategies
author: 2024-12-24 00:37HS code strategy for African trade lanes
author: 2024-12-24 00:20Cleaning agents HS code classification
author: 2024-12-23 23:32819.66MB
Check798.19MB
Check855.66MB
Check828.51MB
Check671.32MB
Check371.31MB
Check694.92MB
Check237.81MB
Check854.55MB
Check756.25MB
Check381.35MB
Check249.94MB
Check672.15MB
Check977.51MB
Check837.68MB
Check887.37MB
Check463.44MB
Check298.53MB
Check227.62MB
Check578.89MB
Check644.76MB
Check322.44MB
Check695.95MB
Check236.86MB
Check722.75MB
Check443.86MB
Check617.89MB
Check249.24MB
Check436.96MB
Check968.87MB
Check493.93MB
Check588.61MB
Check979.47MB
Check733.77MB
Check564.31MB
Check946.21MB
CheckScan to install
Locating specialized suppliers by HS code to discover more
Netizen comments More
2179 Pharma supply chain mapping by HS code
2024-12-24 02:02 recommend
123 Furniture trade (HS code ) insights
2024-12-24 01:59 recommend
1139 HS code-based cargo insurance optimization
2024-12-24 01:32 recommend
481 Exotic fruits HS code references
2024-12-24 01:06 recommend
2586 Import restrictions by HS code category
2024-12-23 23:23 recommend