行业组件数据 · 2026

气缸体

The main structural component of a diesel engine that houses cylinders, coolant passages, and provides mounting points for other engine parts.

技术定义与适配语境
典型 气缸体 会按材料、尺寸公差、适配关系和失效风险在 汽车制造 中评估。

A cylinder block is the foundational structure of a diesel engine, typically made from cast iron or aluminum alloy. It contains cylindrical bores where pistons move, integrated coolant and lubrication passages, and mounting surfaces for the cylinder head, crankshaft, and other engine components. It provides structural integrity and precise alignment for all moving parts while managing thermal expansion and mechanical stresses.

组件规格

定义
A cylinder block is the foundational structure of a diesel engine, typically made from cast iron or aluminum alloy. It contains cylindrical bores where pistons move, integrated coolant and lubrication passages, and mounting surfaces for the cylinder head, crankshaft, and other engine components. It provides structural integrity and precise alignment for all moving parts while managing thermal expansion and mechanical stresses.
工作原理
The cylinder block serves as the engine's backbone, containing combustion chambers where fuel-air mixture ignites. It transfers combustion forces through pistons to the crankshaft while maintaining precise alignment of all components. Coolant passages regulate temperature, and oil galleries provide lubrication to moving parts.
材料
Gray cast iron (GG25GG30)Compacted graphite iron (CGI)Aluminum alloy (A380A356) with cast iron cylinder liners
Weight
50-300 kg
Deck Height
200-500 mm
Bore Diameter
80-200 mm
Cylinder Spacing
1.1-1.3 × bore diameter
Surface Roughness
Ra 0.8-1.6 μm for sealing surfaces
Coolant Passage Size
6-12 mm diameter
Main Bearing Journal Diameter
60-120 mm
标准
ISO 185:2005ISO 945:2008DIN EN 1563:2018SAE J431

行业分类与别名

气缸体 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Inadequate coolant flow or air pockets->Localized overheating leading to thermal cracks->Proper coolant system design with adequate flow rates, bleed valves, and temperature monitoring
Improper torque sequence during assembly->Warped deck surface causing head gasket failure->Follow manufacturer torque specifications and sequence, use calibrated torque wrenches
Cavitation erosion in coolant passages->Coolant leakage and reduced heat transfer->Use proper coolant additives, maintain correct coolant concentration, avoid excessive pump speeds

工业生态与工程逻辑

0
Thermal cracking from overheating
1
Cylinder bore scoring
2
Coolant leakage
3
Structural fatigue failure
4
Corrosion in water jackets

合规与检测

tolerance
Cylinder bore: H7 tolerance, Deck flatness: 0.05 mm over 150 mm, Main bearing alignment: 0.02 mm TIR
test method
Pressure testing: 4-6 bar for 30 minutes, Dimensional inspection with CMM, Ultrasonic testing for casting defects, Magnetic particle inspection for cracks

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the difference between wet and dry cylinder liners?

Wet liners have direct contact with coolant for better heat transfer but require precise sealing. Dry liners are pressed into the block without coolant contact, offering simpler construction but potentially higher operating temperatures.

How does cylinder block material affect engine performance?

Cast iron provides excellent durability and vibration damping but adds weight. Aluminum reduces weight and improves heat dissipation but requires cylinder liners and has different thermal expansion characteristics.

What are common failure modes for cylinder blocks?

Cracking from thermal stress, cylinder bore wear, corrosion in coolant passages, warping of deck surface, and thread stripping in mounting points.

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CNFX Industrial Component Index · 汽车制造

数据基础

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初步技术归类
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

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URN:CNFX:ME:UNIT:CYLINDER_BLOCK