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TD27 Diesel Engine Cylinder Head 11039-43G03
The TD27 Diesel Engine Cylinder Head is a critical component in the TD27 engine, which is commonly found in various Nissan and other vehicles.
The cylinder head is situated at the top of the engine block and houses several essential components. Here's an overview of the key features and functions of the TD27 Diesel Engine Cylinder Head:
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Combustion Chamber: The cylinder head contains the combustion chambers where the air and fuel mixture is ignited by the engine's diesel injection system. These chambers are designed to promote efficient and controlled combustion, resulting in power generation.
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Valves and Valve Ports: The cylinder head has openings for intake and exhaust valves. These valves are responsible for regulating the flow of air into the combustion chamber and expelling exhaust gases after combustion. Proper sealing and operation of these valves are crucial for engine performance.
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Valve Springs and Rocker Arms: Valve springs and rocker arms are part of the valve train assembly within the cylinder head. Valve springs provide the necessary force to close the valves, while rocker arms transfer motion from the camshaft to open and close the valves.
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Camshaft: The camshaft is positioned within the cylinder head and controls the precise timing of valve operation. It ensures that the intake and exhaust valves open and close at the right moments in the engine's four-stroke cycle.
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Coolant Passages: The cylinder head incorporates coolant passages to allow the flow of engine coolant, which helps regulate the operating temperature of the engine. Efficient cooling is essential to prevent overheating and maintain engine performance.
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Cylinder Head Gasket: A cylinder head gasket seals the connection between the cylinder head and the engine block, preventing coolant and oil leaks and maintaining proper compression within the combustion chambers.
The TD27 Diesel Engine Cylinder Head is constructed from durable materials to withstand high temperatures and pressures. Proper maintenance and periodic inspection of the cylinder head are crucial to ensure its longevity and continued performance. In case of damage or wear, cylinder head repair or replacement is necessary to maintain the engine's efficiency and reliability.
High Performance - Casting Iron:
The cylinder head of a diesel engine is subjected to high-temperature and high-pressure environments, making it a critical component that requires high strength and temperature resistance. It is made of cast iron, which is known for its excellent thermal conductivity and high strength. Cast iron is also highly resistant to thermal expansion and contraction, which is essential in maintaining the cylinder head’s structural integrity under extreme conditions. Additionally, cast iron is a cost-effective material that can be easily cast into complex shapes, making it an ideal choice for manufacturing cylinder heads. .
Heat Dissipation Holes:
It has excellent heat dissipation capabilities to dissipate the high-temperature gases and coolant effectively. Therefore, the complex cooling hole structures that allow for efficient heat transfer. These cooling holes are designed to allow the coolant to flow through the cylinder head, absorbing heat from the engine and carrying it away to the radiator. Additionally, the cooling holes help to distribute the coolant evenly throughout the cylinder head, ensuring that all areas are adequately cooled. The design of the cooling hole structure is critical in ensuring that the cylinder head can withstand the high temperatures and pressures of the engine while maintaining its structural integrity.
Anti-wear:
The cylinder head has excellent wear resistance to ensure its long-term use. Due to that it is mainly made of high-hardness and wear-resistant cast iron materials. These materials are known for their excellent wear resistance, which is essential in ensuring that the cylinder head can withstand the harsh conditions of the engine over an extended period.
TD27 Diesel Engine Cylinder Head Product Parameter：
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Product Name |
Cylinder Head |
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Application |
Diesel Engine Parts |
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Engine Number |
TD27 |
|
Size |
STD |
|
OEM Number |
11039-43G03 |
|
Condition |
100% Brand-new |
|
Year |
1987-2004 |
|
Warranty |
6 Months |
|
Material |
Casting Iron |
|
Payment Way |
T/T, L/C, Paypal, Western Union, UPS |
|
Car Model |
Nissan |
The engine cylinder head is used to close the cylinder and constitute the combustion chamber. Side valve type engine cylinder head, cast inside the water jacket, into the water capacity holes, water holes, spark plug holes, bolt holes, combustion chamber, etc. Overhead valve engine cylinder head, in addition to cooling water jacket, there are valve devices, intake and exhaust channels, etc.
The role of the cylinder head
The cylinder head in the internal combustion engine belongs to the gas distribution mechanism, mainly used to close the upper part of the cylinder, which constitutes the combustion chamber. And do for the camshaft and rocker arm shaft and intake and exhaust pipe support. The main purpose is to suck the air into the cylinder, the spark plug ignites the combustible mixture, drives the piston to do work, and the exhaust gas from the exhaust pipe is discharged.
The material of the cylinder head
The modern design of the car engine cylinder head is made of aluminum alloy. The cylinder head is both a complex and very heavy version of the casting parts, combustion chamber, engine power intake, and exhaust pipes installed in the cylinder head.
Cylinder head in the engine work characteristics is in high-temperature state work, bear a large thermal shock and will lead to stress concentration, so the aluminum alloy has become a popular product.
The advantage of using aluminum alloy manufacturing cylinder head in addition to lightweight, there is another outstanding advantage is excellent thermal conductivity. For cars, light car engines, the use of aluminum alloy cylinder heads can make the engine thermal efficiency better, and avoid the cylinder head combustion chamber parts overheating phenomenon.
Common failures of the cylinder head
The use of cylinder gasket and equipment is not correct
Cylinder gasket equipment in the engine between the cylinder block and cylinder head, the effect is to ensure the sealing of the combustion chamber, to avoid the leakage of gas, cooling water, and lubricating oil. Therefore, the use and equipment of the cylinder gasket are not perfect, and will directly affect the reliability of the cylinder head seal and cylinder gasket life.
To ensure the seal quality, the cylinder gasket must be selected with the original cylinder standard and thickness, the appearance should be flat, the edge should be attached firmly, and should not have scratches, depressions, wrinkles, and rust. Otherwise, it will affect the sealing quality of the cylinder head.
Cylinder head slim jump
The cylinder head's slim runout is because of the cylinder head in the tightening and burning pressure under the effect of the attempt to separate from the cylinder block formed. These pressures cause the cylinder head coupling bolts to lengthen, which then causes a slim bounce between the cylinder head and the cylinder block. This slim bounce will cause the cylinder head gasket to slack and tighten, and then accelerate the damage to the cylinder head gasket, affecting its sealing function.
The cylinder head or cylinder block is too flat
Warpage deformation is a common problem of the cylinder head, but also the cylinder gasket repeatedly burns the primary reason. Especially aluminum alloy cylinder head is more prominent because aluminum alloy material thermal conductivity is high, cylinder head than the cylinder block is smaller and thinner, aluminum alloy cylinder head temperature rises fast.
When the cylinder head deformation, it and the cylinder body plane combination will not be tight, and the cylinder seal quality will be reduced, resulting in air leakage and burned cylinder gasket, and then further deterioration of the cylinder seal quality. Assuming the cylinder head is seriously warped, it is necessary to replace it.
