![Guy Negre, head of French company MDI enterprises s.a, looks at a motor which runs entirely on compressed air, producing zero emissions, in Carros, south eastern France, January 4, 2008. MDI enterprises Guy Negre, head of French company MDI enterprises s.a, looks at a motor which runs entirely on compressed air, producing zero emissions, in Carros, south eastern France, January 4, 2008. MDI enterprises](https://c8.alamy.com/comp/2D2W9EG/guy-negre-head-of-french-company-mdi-enterprises-sa-looks-at-a-motor-which-runs-entirely-on-compressed-air-producing-zero-emissions-in-carros-south-eastern-france-january-4-2008-mdi-enterprises-recently-signed-a-contract-with-the-indian-group-tata-reuterseric-gaillard-france-2D2W9EG.jpg)
Guy Negre, head of French company MDI enterprises s.a, looks at a motor which runs entirely on compressed air, producing zero emissions, in Carros, south eastern France, January 4, 2008. MDI enterprises
![Technicians Mdi Motor Development International Work Editorial Stock Photo - Stock Image | Shutterstock Technicians Mdi Motor Development International Work Editorial Stock Photo - Stock Image | Shutterstock](https://editorial01.shutterstock.com/preview-440/7044294m/c1c2d109/Shutterstock_7044294m.jpg)
Technicians Mdi Motor Development International Work Editorial Stock Photo - Stock Image | Shutterstock
![Energies | Free Full-Text | Experimental Investigation on the Performance of a Compressed-Air Driven Piston Engine Energies | Free Full-Text | Experimental Investigation on the Performance of a Compressed-Air Driven Piston Engine](https://pub.mdpi-res.com/energies/energies-06-01731/article_deploy/html/images/energies-06-01731-g002.png?1580947131)
Energies | Free Full-Text | Experimental Investigation on the Performance of a Compressed-Air Driven Piston Engine
![Investigation and implementation of compressed air powered motorbike engines - Nabil - 2019 - Engineering Reports - Wiley Online Library Investigation and implementation of compressed air powered motorbike engines - Nabil - 2019 - Engineering Reports - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/bd8bd868-642f-4af6-92b1-d3511357e726/eng212034-fig-0002-m.jpg)