ISO 28741:2023 PDF

Name: ISO 28741:2023 — Road vehicles — Spark-plugs and their cylinder head housings — Basic characteristics and dimensions
SKU: ISO 28741:2023
Price: 25 EUR
Availability: InStock

Road vehicles — Spark-plugs and their cylinder head housings — Basic characteristics and dimensions

Название (английский):

ISO 28741:2023

Road vehicles — Spark-plugs and their cylinder head housings — Basic characteristics and dimensions

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 24
Дата публикации:: 31 августа 2023 г.
Издание:: ISO IS 28741 edition 3 version 1
ICS:: 43.060.50

Тип поставки:

Full version360 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:4 раб. дн. (перевод)

Цена:360 €

Описание (английский):

This document specifies the main properties and dimensions of spark plugs, including the terminals and the dimensions of their cylinder head housings, for use with any spark-ignited engines. The usage of spark plugs is not restricted to road vehicles only. This document does not cover screened and waterproof spark plugs (see ISO 3412, ISO 3895 and ISO 3896).

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 28741:2023 - Road vehicles - Spark-plugs and their cylinder head housings - Basic characteristics and dimensions - is a consolidated international standard that specifies the main properties, dimensions and design requirements for spark plugs and their cylinder head housings used with spark‑ignited engines. Applicable beyond road vehicles, the standard harmonizes thread sizes, seating types, terminal interfaces and key dimensional features so manufacturers, OEMs and service suppliers can ensure interchangeability and reliable ignition-system fitment.

Key Topics

Scope and exclusions: Defines general requirements for spark plugs and housings; excludes screened and waterproof spark plugs (see ISO 3412, ISO 3895, ISO 3896).

Thread sizes and tolerances: Covers standard metric thread sizes (examples include M10, M12, M14, M18) and references ISO thread standards (ISO 68‑1, ISO 261, ISO 965 series) for limiting dimensions and tolerances.

Seating types and reach: Specifies flat seating and conical seating interfaces, and defines spark plug reach (short, medium, long, extended, etc.) and projection to avoid piston interference.

High‑voltage terminals: Standardizes terminal types - SAE (solid post), cup terminals, and threaded terminals - including dimensional and measurement rules for reliable ignition lead connection.

Gaskets and sealing: Defines gasket function and required thickness after initial torqueing for flat seats to ensure gas‑tight seals.

Installation torque: Provides guidance on installation tightening torque and cautions on factors (thread lubrication, head material, plating) that affect torque requirements.

Dimensional diagrams and annexes: Includes detailed figures, tables and normative annexes for half‑thread plugs, optional terminals, and combination housings.

Applications

Automotive OEMs and component manufacturers use ISO 28741:2023 to design and produce compatible spark plugs, spark plug shells, and cylinder head housings.

Engine designers and calibration engineers rely on defined reach, projection, and seating specifications to ensure combustion chamber clearance and ignition reliability.

Aftermarket parts suppliers and service technicians use the standard to select correct replacement plugs, matching thread, seating and terminal types.

Regulatory and quality teams use the standard to harmonize procurement, testing interfaces and conformity with international thread/tolerance rules.

Related Standards

ISO 11565 - testing of spark plugs

ISO 68‑1, ISO 261, ISO 965‑1, ISO 965‑3 - metric thread specifications and tolerances

Excluded product guidance: ISO 3412, ISO 3895, ISO 3896 (screened/waterproof spark plugs)

Keywords: ISO 28741:2023, spark plugs, cylinder head housings, spark plug dimensions, thread sizes, ignition terminals, spark plug reach, installation torque.

ISO 28741:2023 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Технические детали

BS ISO 34-1:2022

Rubber, vulcanized or thermoplastic - Determination of tear strength. Trouser, angle and crescent test pieces.

SIST EN ISO 389-5:2007

Acoustics - Reference zero for the calibration of audiometric equipment - Part 5: Reference equivalent thresh…

SIST EN ISO 389-6:2007

Acoustics - Reference zero for the calibration of audiometric equipment - Part 6: Reference threshold of hear…

BS ISO 6813:1998

Road vehicles. Collision classification. Terminology

BS EN ISO 2614:2023

Analysis of natural gas. Biomethane. Determination of terpenes´ content by micro gas chromatography.

BS ISO 965-4:2021

ISO general purpose metric screw threads. Tolerances - Limits of sizes for hot-dip galvanized external screw…

BS ISO 11565:2024

Road vehicles. Spark-plugs. Test methods and requirements.

ISO 965-1:2013/Amd 1:2021

ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data — Amendment 1