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Air Filter Element Test Method

HFTC6, Operator Accommodation
  • Ground Vehicle Standard
  • J1533_201907
  • Current
Published 2019-07-03 by SAE International in United States
This SAE test method establishes a uniform test procedure for determining the gravimetric (mass based) efficiency and pressure drop performance levels of operator enclosure panel type filters on off-road, self-propelled work machines used in earth moving, and forestry, as defined in SAE J1116 and for agricultural equipment as defined in ANSI/ASAE S390, and equipped with an operator enclosure with a powered fresh air system. ISO/TS 11155-1 may additionally be used, which describes the use of particle sizing devices to measure the fractional (particle size) efficiency of panel type filters for automotive cabin filter applications. Automotive cabin filters are similar to filters described in this procedure, and the ISO/TS 11155-1 test method is therefore directly applicable.
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SAE 17.6 Cubic Inch Spark Plug Rating Engine

Ignition Standards Committee
  • Ground Vehicle Standard
  • J2203_201906
  • Current
Published 2019-06-11 by SAE International in United States
This SAE Standard defines the standard engine to be used in determining spark plug preignition ratings. The engine is known as the SAE 17.6 Cubic Inch Spark Plug Rating Engine.
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A Study on NVH Performance Improvement of TPE Air Intake Hose Based on Optimization of Design and Material

DuPont China Holding Co., Ltd.-Yu Gu
DuPont Engineering Polymers-Yong Sun (Steven) Jin
Published 2019-06-05 by SAE International in United States
Environmental and fuel economy regulations (Eu 6d and WLTP RDE) on automobiles have been tightened recently. To counter this regulation, the global automobile industry is focusing on weight reduction, fuel efficient turbo charger, cooled EGR, thermal management, low friction and so on. However, the high-speed turbocharger makes turbulence, and resulting in airflow noise. This noise is transmitted indoor through the air intake system, which adversely affects the vehicle's competitiveness. Therefore, for turbo engine, it is essential to reduce the noise of the air intake system. The air intake system consists of air cleaner, air filter, air intake hose and air duct. The air flow noise of turbo-engine is mainly the emission noise emitted from the walls of air intake system. And the transfer path of turbo noise is in order of air intake hose, air cleaner and air duct. Therefore, it is effective to reduce the noise of the air intake hose located at the beginning of noise transfer path. In the past, rubber hoses with vibration and acoustic insulation were mainly used to reduce…
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Filter Element Robustness Strategy for Mud Ingestion

Ford Motor Co., Ltd.-John L. Emley, Venkatesan Shrevatsan
Mann + Hummel USA Inc.-Jon Nichols
Published 2019-04-02 by SAE International in United States
Air filter elements have been around since the dawn of automotive development. The function of an air induction system and the filter element in particular is to remove particulates such as dust, soot, and relatively minor contaminants from the air flow. This protects the engine, turbocharger, and other components from wear. However, sometimes severe duty cycles may cause large amounts of dust, mud, and water to enter the air induction system (AIS). This can cause filter degradation and even rupture or deformation, leading to highly increased engine and turbocharger wear. One example of this extreme loading is the tar sands region of Alberta, Canada, where trucks can accumulate over 1000 pounds of mud on a vehicle during normal usage over a few weeks’ time. Significant amounts of this mud also get ingested into the AIS.This study attempts to analyze different aspects of filter design to increase robustness to severe usage, particularly mud. Different aspects studied are filter element structure, filter element media, inlet location, and inlet blocking. Traditional ISO 5011 tests would not replicate the…
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Design, Simulation & Optimization of an Air Intake System to Reduce Induction Noise

Tata Motors Ltd.-Ujwal Patil, Dnyanesh Rahane
Published 2019-01-09 by SAE International in United States
Air intake system (AIS) plays a major role in reducing the noise level in passenger car compartment, which has become an important requirement due to increasing customer expectation for better in cab noise. The ideal air intake system design should have minimum possible noise at snorkel entry point which ultimately contributes in cabin noise.There are different techniques that are implemented for an air intake system noise reduction e.g. choosing proper location of air entry suction point in engine bay compartment, suitable design for air filter box (volume), duct designs etc. Further design improvement are possible with an addition of tuned resonators in the system.An addition of resonator have major effect seen in reducing air induction noise and to meet target Sound Pressure Levels (SPL). But at the same time, selecting the correct type of resonator, its position & volume, frequency/s band at which resonator is tuned are important parameters.The work presented here describes and compares the simulation results (GT POWER) with the measured SPL levels at different rpm range with different resonator types for Utility…
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Hydrodynamic Drive Test Code

Automatic Transmission and Transaxle Committee
  • Ground Vehicle Standard
  • J643_201812
  • Current
Published 2018-12-05 by SAE International in United States
The range of test conditions on the dynamometer shall be sufficient to determine the primary operating characteristics corresponding to the full range of vehicle operations. The characteristics to be determined are: a Torque ratio versus speed ratio and output speed b Input speed versus speed ratio and output speed c Efficiency versus speed ratio and output speed d Capacity factor versus speed ratio and output speed e Input torque versus input speed NOTE: For more information about these characteristics and the design of hydrodynamic drives, refer to “Design Practices: Passenger Car Automatic Transmissions,” SAE Advances in Engineering, AE-18 (Third Ed.) or AE-29 (Fourth Ed.).
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Oxygen System and Component Cleaning

A-10 Aircraft Oxygen Equipment Committee
  • Aerospace Standard
  • ARP1176A
  • Current
Published 2018-10-18 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) provides recommended practices for cleaning aircraft oxygen equipment such as tubing, pieces, parts (including regulator and valve parts), cylinders and ground-based equipment that may be used to support aircraft oxygen systems. This revision introduces a cleanliness coding scheme that can be referenced as a requirement, and/or referenced to identify compliance to meeting such a requirement. These methods may apply to gaseous and liquid oxygen equipment. This document specifies work area details, methods to select suitable cleaning agents, cleaning methods, test methods to verify cleanliness level, and methods of packaging the components and parts after cleaning. Technicians designated to clean oxygen equipment must be qualified and trained to clean oxygen equipment. This ARP is applicable to metallic and non-metallic parts.
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Air Quality for Commercial Aircraft Cabin Particulate Contaminants

AC-9 Aircraft Environmental Systems Committee
  • Aerospace Standard
  • AIR4766/1
  • Current
Published 2018-08-23 by SAE International in United States
This SAE Aerospace Information Report (AIR) covers airbone particulate contaminants that may be present in commercial aircraft cabin air during operation. Discussions cover sources of contaminants, methods of control and design recommendations. Air quality, ventilation requirements and standards are also discussed.
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Air Conditioning Systems for Subsonic Airplanes

AC-9 Aircraft Environmental Systems Committee
  • Aerospace Standard
  • ARP85F
  • Current
Published 2018-08-23 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) contains guidelines and recommendations for subsonic airplane air conditioning systems and components, including requirements, design philosophy, testing and ambient conditions. The airplane air conditioning system comprises that arrangement of equipment, controls and indicators that supply and distribute air to the occupied compartments for ventilation, pressurization, and temperature and moisture control. The principal features of the system are: a A supply of outside air with independent control valve(s). b A means for heating c A means for cooling (air or vapor cycle units and heat exchangers) d A means for removing excess moisture from the air supply e A ventilation subsystem f A temperature control subsystem g A pressure control subsystem Other system components for treating cabin air such as filtration and humidification are included, as are the ancillary functions of equipment cooling and cargo compartment conditioning. The interface with the major associated system, the pneumatic system (Chapter 36 of ATA 100) is at the inlet of the air conditioning shutoff valves. This boundary definition aligns with that in the…
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Engines, Aircraft, Reciprocating, General Specification For

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • AS25109A
  • Current
Published 2018-06-18 by SAE International in United States
This specification covers standard requirements for reciprocating aircraft engines.
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