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Automotive Piston and Ring Standards Committee Engines

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Standard

Internal Combustion Engines - Piston Ring-Grooves
2024-02-16
CURRENT
J2275_202402
There is no ISO standard equivalent to this SAE Standard. This SAE Standard identifies and defines the most commonly used terms for piston ring-groove characteristics, specifies dimensioning for groove widths, and demonstrates the methodology for calculation of piston groove root diameter. The requirements of this document apply to pistons and rings of reciprocating internal combustion engines and compressors working under analogous conditions, up to and including 200 mm diameter and 4.5 mm width for compression rings and 8.0 mm width for oil rings. The specifications in this document assume that components are measured at an ambient temperature of 20 °C (68 °F). Tolerances specified in this document represent practical functional limits and do not imply process capabilities.
Standard

Power Cylinder Effects on Friction and Fuel Economy
2024-01-22
CURRENT
J2904_202401
This document covers the mechanisms from the power cylinder, which contribute to the mechanical friction of an internal combustion engine. It will not discuss in detail the influence of other engine components or engine driven accessories on friction.
Standard

Power Cylinder Oil Consumption: Transport Mechanisms
2023-02-21
WIP
J2794
This document covers oil transport mechanisms from the power cylinder system which might affect oil consumption. It will not discuss in detail the oil consumption mechanisms from other systems or engine components.
Standard

Power Cylinder Blow-by: Blow-by Mechanisms
2022-02-15
CURRENT
J2797_202202
This document covers the mechanisms associated with the power cylinder system which might affect blow-by. It will not discuss in detail the blow-by mechanisms from other systems or engine subsystems.
Standard

Power Cylinder Scuffing: Mechanisms
2020-08-12
CURRENT
J3070_202008
This document describes the various scuffing failure modes of the power cylinder system in an internal combustion engine. The causes and preventative measures for each failure mode are discussed. It should be noted that many remedies for scuff can lead to NVH (noise vibration and harshness) issues. However, NVH is not considered in this document.
Standard

Internal Combustion Engines - Piston Vocabulary
2020-02-18
CURRENT
J2612_202002
This SAE standard defines the most commonly used terms for pistons. These terms designate either types of pistons or certain characteristics and phenomena of pistons.
Standard

Power Cylinder Oil Consumption: Transport Mechanisms
2018-07-27
CURRENT
J2794_201807
This document covers oil transport mechanisms from the power cylinder system which might affect oil consumption. It will not discuss in detail the oil consumption mechanisms from other systems or engine components.
Standard

Power Cylinder Friction: Mechanisms
2018-05-16
HISTORICAL
J2904_201805
This document covers the mechanisms from the power cylinder which contribute to the mechanical friction of an internal combustion engine. It will not discuss in detail the influence of other engine components or engine driven accessories on friction.
Standard

Internal Combustion Engines - Piston Ring-Grooves
2018-05-16
HISTORICAL
J2275_201805
There is no ISO standard equivalent to this SAE Standard. This SAE standard identifies and defines the most commonly used terms for piston ring-groove characteristics, specifies dimensioning for groove widths, and demonstrates the methodology for calculation of piston groove root diameter. The requirements of this document apply to pistons and rings of reciprocating internal combustion engines and compressors working under analogous conditions, up to and including 200 mm diameter and 4.5 mm width for compression rings and 8.0 mm width for oil rings. The specifications in this document assume that components are measured at an ambient temperature of 20 °C (68 °F). Tolerances specified in this document represent practical functional limits and do not imply process capabilities.
Standard

Power Cylinder Blow-By: Blow-By Mechanisms
2014-08-28
HISTORICAL
J2797_201408
This document covers the mechanisms associated with the power cylinder system which might affect blow-by. It will not discuss in detail the blow-by mechanisms from other systems or engine subsystems.
Standard

Internal Combustion Engines—Piston Ring-Grooves
2010-01-19
HISTORICAL
J2275_201001
There is no ISO standard equivalent to this SAE Standard. This SAE standard identifies and defines the most commonly used terms for piston ring-groove characteristics, specifies dimensioning for groove widths, and demonstrates the methodology for calculation of piston groove root diameter. The requirements of this document apply to pistons and rings of reciprocating internal combustion engines and compressors working under analogous conditions, up to and including 200 mm diameter and 4.5 mm width for compression rings and 8.0 mm width for oil rings. The specifications in this document assume that components are measured at an ambient temperature of 20 °C (68 °F). Tolerances specified in this document represent practical functional limits and do not imply process capabilities.
Standard

Power Cylinder Friction: Mechanisms
2010-01-14
HISTORICAL
J2904_201001
This document covers the mechanisms from the power cylinder which contribute to the mechanical friction of an internal combustion engine. It will not discuss in detail the influence of other engine components or engine driven accessories on friction.
Standard

Internal Combustion Engines--Piston Rings Coil Spring Loaded Oil Control Rings
2008-06-30
CURRENT
J2003_200806
This SAE Standard is equivalent to ISO Standard 6626. Differences, where they exist, are shown in the appendix with associated rationale. This document specifies the essential dimensions of piston ring types DSF-C, DSF-CNP, SSF, GSF, DSF, DSF-NG, and SSF-L coil spring loaded oil control rings. For the cast iron part the recommended material is class 10 according to SAE J1590. For special applications material classes 20 to 50 may be used. Variation in face design and spring groove from these may be used, as recommended by individual manufacturers, in plain or chromed versions. The tangential forces of coil spring loaded oil control rings can be varied over a wide range. Explanations and recommendations are given in Section 6. The normal range for axial width of coil spring loaded oil control rings (3 to 8 mm inclusive) is divided into 0.5 or 1.0 mm steps.
Standard

Internal Combustion Engines--Piston Rings--Inspection Measuring Principles
2008-06-30
CURRENT
J1589_200806
Differences, where they exist, are shown in Appendix A. This SAE Standard defines the measuring principles to be used for measuring piston rings. It applies to piston rings up to and including 200 mm diameter for reciprocating combustion engines. These inspection measuring principles may also be used for piston rings for compressors working under analogous conditions.
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