Automotive Air Induction Systems

Techonologies for emissions reduction

Efforts to overcome future emission challenges for carbon dioxide and other exhaust emissions are leading to considerable powertrain innovations. Key efforts include improved combustion, increased thermal efficiencies and reduced frictional losses. Vehicle electrification in its various forms will play an increasing role in reducing emissions. Air induction systems play a key role in both improving an engine’s fuel consumption performance as well as assisting with exhaust emissions reduction.

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As such, key engine air induction developments include:

  • Continuing downsizing and right-sizing, via boosting and direct fuel injection, which impacts air induction system designs. Moves to greater specific power has resulted in some intake manifolds being exposed to pressures greater than 3 Bar together with temperatures greater than 200°C. There is renewed interest in variable intake systems due to the potential to impact the airflow characteristics and aid in the reduction of emissions by improved combustion characteristics.
  • Packaging of components is an ongoing concern as engines are used for various vehicle layouts combines with the increased use of electrified components.
  • A number of OEMs have now embraced the use of integrated charge air coolers (CAC) within the intake manifold due to the significant benefits offered that include improved intake air temperatures and reduced pressure losses. A number of leading intake manifold suppliers have sought suitable CAC suppliers as development partners.
  • EGR is increasingly used as a means of improving engine efficiency and reducing engine emissions. The EGR technology selected (internal, high- or low-pressure) impacts the air induction system architecture.
  • The development of a number of injection and blow molding grades of high temperature resistant thermoplastic materials for various air induction applications including ducts. Increased system temperatures and pressures together with mass reduction has led to interest in such materials.

Smart material and process selection together with optimized designs may help with assisting the air induction supply base in meeting the price targets of the OEMs. Unfortunately, sometimes leading suppliers have at times found such targets to be challenging when it comes to the profitability of their business.

The ITB Group’s 2016 report follows up its six previous air induction-related reports over the last 20 years. This research and in-depth analysis will provide an improved understanding of the overall business, legislative and technical developments impacting automotive engine air induction systems.

Subscribers who purchase the report will also be privy to The ITB Group’s advisory capabilities on emerging performance requirements and current prospects for future innovation, which allow them to make targeted company decisions.


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