8407 / spark-ignition recip or rotary int comb piston engine
840710 / Aircraft Engines (Spark-ignition)
840721 / Outboard Motors
840729 / Other Marine Propulsion Engines (Spark-ignition)
840731 / Reciprocating Piston Engines for Vehicles, Not Exceeding 500cc
840732 / Reciprocating Piston Engines for Vehicles, Cylinder Capacity 50-250cc
840733 / Reciprocating Piston Engines for Vehicles, Cylinder Capacity 250-1,000cc
840734 / Reciprocating Piston Engines for Vehicles, Exceeding 1, 000cc
840790 / Other Spark-ignition Internal Combustion Piston Engines

Indian Standards

IS 5791 : 1986 / Technical Supply Conditions for Piston Rings for Internal Combustion Engines
IS 7793 : 1975 / Aluminium alloys for IC engine pistons
IS 8422 : Part I : 1977 / Specification for Piston Rings for IC Engines - Part I : Plain Compression Rings from 30 up to 200 mm Nominal Diameter R-Rings
IS 8422 : Part II : 1977 / Specification for Piston Rings for IC Engines - Part II : Taper Faced Compression Rings from 30 up to 200 mm Nominal Diameter M-rings
IS 8422 : Part III : 1977 / Specification for Piston Rings for IC Engines - Part III : Keystone Rings from 82 up to 200 mm Nominal Diameter T-rings 15?
IS 8422 : Part 4 : 1977 / Specification for Piston rings for IC engines: Part 4 Napier oil scraper rings from 30 up to 200 mm nominal diameter N-Rings
IS 8422 : Part 5 : 1977 / Specification for Piston rings for IC engines: Part 5 Stepped oil scraper rings from 30 up to 200 mm nominal diameter Z-Rings
IS 8422 : Part 6 : 1977 / Specification for Piston rings for IC engines: Part 6 Slotted oil control rings from 50 up to 200 mm nominal diameter S-Rings
IS 8422 : Part 7 : 1977 / Specification for Piston rings for IC engines: Part 7 Double bevelled slotted oil control rings from 50 up to 200 mm nominal diameter G-Rings
IS 8422 : Part 8 : 1977 / Specification for Piston rings for IC engines: Part 8 Narrow land slotted oil control rings from 50 up to 200 mm nominal diameter D-Rings
IS 8422 : Part 9 : 1986 / Piston Rings for Internal Combustion Engines - Part 9 : Terms and Definitions
IS 8503 : 1986 / Technical supply conditions for aluminium alloy pistons for internal combustion engines

American Standards

ASME (American Society of Mechanical Engineers)

ASME PTC 17-1973 (R2003)

Performance Test Code – Reciprocating Internal-Combustion Engines

Provides rules for testing, and for the

computation & tabulation of the results of tests,

for all types of reciprocating internal

combustion engines, in order to determine

power & fuel consumption

ANSI/SAE J1996

RAPR98, Internal Combustion Engines - Piston Rings, Quality Requirements

ANSI/SAE J1997

RAPR98, Internal Combustion Engines – Piston Rings – Rectangular Rings

ANSI/SAE J1998 (RAPR98)

Internal Combustion Engines – Piston Rings – Rectangular Rings with Narrow Ring Width

ANSI/SAE J1999 (RAPR98)

Internal Combustion Engines – Piston Rings –Scraper Rings

ANSI/SAE J2000 (RAPR98)

Internal Combustion Engines – Piston Rings – Keystone Rings

ANSI/SAE J2001 (RAPR98)

Internal Combustion Engines – Piston Rings –Half Keystone Rings

ANSI/SAE J2002 (RAPR98)

Internal Combustion Engines – Piston Rings – Oil Control Rings

ANSI/SAE J2003 (RAPR98)

Internal Combustion Engines – Piston Rings –Coil Spring Loaded Oil Control Rings

ANSI/SAE J2004 (RAPR98)

Internal Combustion Engines – Piston Rings –Expander/Segment Oil Control Rings

ANSI/SAE J2226-APR98 (RMAY00),

Internal Combustion Engines – Piston Rings - Steel Rectangular Rings

International standards

IEC 60034-22 Ed. 1.0 b:1996

Rotating electrical machines - Part 22: AC generators for reciprocating internal combustion (RIC) engine driven generating sets

Establishes the principal characteristics of a.c. generators

under the control of their voltage regulators when used for

reciprocating internal combustion engine driven generating

sets. Supplements the requirements given in IEC 60034-1.

IEC 88528-11 Ed. 1.0 en:2004

Reciprocating internal combustion engine driven alternating current generating sets - Part 11: Rotary uninterruptible power systems - Performance requirements and test methods

"Specifies criteria, including performance and test methods, for

rotary uninterruptible power systems arising out of a

combination of mechanical and electrical rotating machines.

Applies to power supplies primarily designed for supplying

uninterrupted a.c. power to the consumer. "