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Effect of Injector cone angle and NTP on performance and emissions of CRDe engine for BS6 compliance

Mahindra Research Valley-Anbarasu Muthusamy, Vagesh Shangar Ramani, Pranav Kumar Sinha
  • Technical Paper
  • 2019-28-0108
To be published on 2019-10-11 by SAE International in United States
The quality of combustion is affected by factors like engine components design, combustion chamber design, EGR, after treatments systems, engine operating parameters etc. The role of fuel injector is crucial on achieving the desired engine performance and emissions. Efficient combustion depends on the quantity of fuel injected, penetration, atomization and optimum injection timing. The nozzle through flow, cone angle, no of sprays and nozzle tip penetration are the factors which decide the selection of perfect injector for an engine. This paper focuses on the selection of the best fit injector suiting the BS6 application on evaluating the performance and emission characteristics. Injectors used were with varying cone angles and NTP which was varied by changing the sealing washer thickness. With all the above injector configuration, the performance and emission were thoroughly analysed at each level. Final configuration was selected based on the Power & Torque, Fuel consumption, smoke, exhaust temperatures.
 

Development of a Low Friction High Performance Wheel Bearing Seal

ILJIN USA Corporation-Seungpyo Lee
Iljin Bearing GmbH-Reinhold Mahr
  • Technical Paper
  • 2019-01-2135
To be published on 2019-09-15 by SAE International in United States
The ever tightening of fuel economy and greenhouse gas emissions standards globally continues to challenge bearing companies toward lower torque, lower mass products. This paper focuses on improving fuel efficiency by considering the torque of automotive wheel bearing seals. This study establishes the level of drag torque reduction achieved through the structural design of the bearing seals. Wheel bearing seals are a critical component that must pass stringent torque, water exclusion, and other critical OEM and supplier performance specifications. They are designed as non-serviceable and must maintain full performance through the life of the vehicle. As a result of the application of specialized structural design, the drag torque, per the study, is reduced by more than 50% compared to existing bearing specifications. Electric vehicle companies are also seeking low friction wheel bearing solutions to further reduce CO2 (indirect or wheel-to-wheel) emissions. This research findings can assist the OEM’s in meeting the rigid emissions and fuel economy standards through drag reduction in the wheel bearings.
 

The Szorenyi Three-Chamber Rotary Engine concept

Partner Rotary Engine Development Agency-Peter King
  • Technical Paper
  • 2019-24-0168
To be published on 2019-09-09 by SAE International in United States
Currently automotive engines are reciprocating or Wankel rotary engine types. Reciprocating engines are bulky, heavy and complex, mainly due to the intake and exhaust valves and their associated cam-­‐train. Wankel engines are rev limited due to the large eccentric load on the crankshaft, and have poor sealing of the apex seals leading to poor economy and undesirable emission gases. The Rotary Engine Development Agency (REDA) has designed a three­‐chamber rotary internal combustion engine concept using its patented Szorenyi Curve. It is an evolution of the four chamber engine design which was the subject of SAE Technical Paper 2017-­‐01-­‐2413 and SAE publication ‘So You Want to Design Engines: UAV Propulsion Systems’. This paper on the three­‐chamber engine concept includes an analysis of the major issues affecting the Wankel engine. The Wankel engine’s geometry results in excessive crankshaft deflection (due to the centrifugal force of the rotor which is eccentric to the crankshaft) and this limits its revs. However, the analysis in the paper reveals that the revs cannot be increased by increasing the diameter of the…
 
new

FITTING, ADAPTER, BULKHEAD, EXTERNAL THREAD, BEAM SEAL TO INTEGRAL WELD RING

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS4229B
  • Current
Published 2019-08-16 by SAE International in United States

Scope is unavailable.

 
new

Fitting, Elbow, 90°, Bulkhead, External Thread, Beam Seal to Integral Weld Ring

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS4233D
  • Current
Published 2019-08-16 by SAE International in United States

SCOPE IS UNAVAILABLE.

 
new

Fitting, Elbow, 45°, Bulkhead, External Thread, Beam Seal to Integral Weld Ring

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS4231D
  • Current
Published 2019-08-16 by SAE International in United States

SCOPE IS UNAVAILABLE.

 
new

FITTING, ADAPTER, EXTERNAL THREAD, BEAM SEAL TO INTEGRAL WELD RING

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS4228D
  • Current
Published 2019-08-16 by SAE International in United States

Scope is unavailable.

 
new

Fitting, Elbow, 45°, External Thread, Beam Seal to Integral Weld Ring

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS4230D
  • Current
Published 2019-08-16 by SAE International in United States

SCOPE IS UNAVAILABLE.

 
new

Fitting, Elbow, 90°, External Thread, Beam Seal to Integral Weld Ring

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS4232D
  • Current
Published 2019-08-16 by SAE International in United States

SCOPE IS UNAVAILABLE.

 
new

Fitting, Plug, Port, Straight Thread, O-Ring Seal

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5170A
  • Current
Published 2019-07-31 by SAE International in United States

Scope is unavailable.