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Water injection for charge cooling

Downsizing direct injection gasoline engines at elevated power density involves several challenges of engine design. Recently water injection has been re-discovered to have a high potential to deliver a feasible solution between several trade-offs. Water injection also leads to charge cooling allowing for higher compression ratios.

Advantages
of Charge Cooling
  • better knock resistance
  • lower particulate (PM) and NOx emissions
  • higher maximum power and torque
  • improved component protection
 
LaVision provides solutions for in-cylinder optical measurements to help optimize water injection systems and EGR strategies:
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Analysis of in-cylinder water distribution by comparing local and global water concentration. Measurements of crank angle resolved water concentration recorded with ICOS-Temperature.

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