行业组件数据 · 2026

火花塞端口(汽油)/喷油器端口(柴油)

Precision-machined port in cylinder head for spark plug (gasoline) or fuel injector (diesel) installation

技术定义与适配语境
典型 火花塞端口(汽油)/喷油器端口(柴油) 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 critical machined interface in the cylinder head that provides the mounting location and sealing surface for either spark plugs in gasoline engines or fuel injectors in diesel engines. This component ensures proper alignment, thermal management, and sealing between the combustion chamber and ignition/fuel delivery systems.

组件规格

定义
A critical machined interface in the cylinder head that provides the mounting location and sealing surface for either spark plugs in gasoline engines or fuel injectors in diesel engines. This component ensures proper alignment, thermal management, and sealing between the combustion chamber and ignition/fuel delivery systems.
工作原理
The port serves as a precision interface that maintains alignment between the spark plug or fuel injector and the combustion chamber. It provides thermal conductivity paths for heat dissipation, maintains compression sealing through gasket surfaces, and ensures proper electrode or nozzle positioning for optimal combustion timing and efficiency.
材料
Typically cast aluminum alloy (for cylinder head integration) with machined steel inserts or threads for durability. Common materials: Aluminum A356-T6Ductile Ironwith hardened steel thread inserts (SAE 4140/4340). Surface treatments: Anodizingphosphate coatingor ceramic thermal barrier coatings.
Seat Angle
45° or 60° cone seat
Thread Size
M14x1.25 (common spark plug), M12x1.25 (diesel injector)
Surface Finish
Ra 1.6-3.2μm
Depth Tolerance
±0.1mm
Thermal Conductivity
≥120 W/m·K
Thread Pitch Accuracy
Class 6H/6g
Maximum Operating Temperature
250°C continuous, 350°C peak
标准
ISO 28741ISO 6518DIN 72552SAE J548

行业分类与别名

火花塞端口(汽油)/喷油器端口(柴油) 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

Over-torquing during installation->Thread stripping or port cracking->Use calibrated torque wrenches, follow manufacturer specifications, implement torque-angle procedures
Thermal cycling stress->Micro-cracks in port material->Proper material selection, thermal barrier coatings, controlled cooling system operation
Carbon deposit accumulation->Poor component seating and heat transfer->Regular maintenance cleaning, use of anti-seize compounds, proper combustion tuning

工业生态与工程逻辑

0
Thread stripping during installation
1
Carbon buildup causing poor seating
2
Thermal cracking from thermal cycling
3
Cross-threading during component replacement
4
Compression leaks from damaged sealing surfaces

合规与检测

tolerance
Thread pitch: ±0.01mm, Depth: ±0.1mm, Concentricity: 0.05mm TIR
test method
Go/no-go thread gauges, depth micrometers, pressure testing (leak check), thermal cycling tests per ISO 6518

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 gasoline and diesel engine ports?

Gasoline engine ports are designed for spark plugs with specific thread patterns and thermal requirements for ignition timing. Diesel ports accommodate fuel injectors with different sealing mechanisms (typically conical seats vs. flat gaskets) and must withstand higher injection pressures.

How do port specifications affect engine performance?

Port depth and thread accuracy directly impact spark plug gap or injector nozzle position, affecting combustion efficiency, emissions, and power output. Improper port machining can cause misfires, poor fuel atomization, or compression leaks.

What maintenance is required for these ports?

Regular inspection for carbon buildup, thread wear, and seat damage. Threads should be cleaned and inspected during spark plug/injector replacement. Damaged threads require helicoil inserts or port re-threading to maintain proper torque specifications.

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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。

请求制造能力信息: 火花塞端口(汽油)/喷油器端口(柴油)

说明目标数量、应用场景、交期和关键技术要求,用于准备 RFQ 或供应商评估。

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