Automotive Air Induction Systems

Techonologies for emissions reduction

Efforts to overcome future emission challenges for carbon dioxide and other exhaust emissions while meeting global supply challenges are leading to considerable powertrain innovations. Key efforts include improved combustion, increased thermal efficiencies, reduced frictional losses and efforts to standardize systems and components. 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 with exhaust emissions reduction and improving engine performance. As such, key engine air induction developments include:

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  • 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.
  • 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,  reduced pressure losses possibly easier packaging and faster response. 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 new 2019 report follows up its seven previous air induction-related reports over the last 25 years. The ITB Group now offers a dynamic two-pronged approach for highlighting air induction developments. The key elements of ITB’s approach include:

  • Web-based Portal – provides ongoing updates concerning developments and analyses pertaining to the automotive air induction market.
  • Industry-Funded Report – update of key technical, legislative and market developments together with an overview of the business dynamics of the automotive air induction market.

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