|Orbital uses compressed air to atomize the fuel charge in its direct-injection system rather than high pressure.|
Orbital Corporation and Bajaj Auto have expanded their licensing arrangements to cover liquid petroleum gas (LPG) and compressed natural gas (CNG) applications. In May 2004, the two announced a Technical Cooperation Agreement for the application of Orbital’s direct-injection technology to Bajaj’s autorickshaw three-wheeler vehicles.
The earlier agreement was directed to gasoline-fueled applications. The new arrangement enable the addition of two new gaseous models to the three-wheeler range.
Bajaj, based in Pune, India, is one of India’s largest producers of two- and three-wheelers and dominates the autorickshaw market segment in Asia. The autorickshaw is the ubiquitous form of transport throughout India and much of Asia and is currently enjoying strong growth.
The expansion of the Technical Cooperation Agreement to cover LPG & CNG applications will provide Bajaj with the ability to satisfy the burgeoning market for gaseous powered vehicles. India is making significant investments in the LPG and CNG delivery infrastructure and has mandated the exclusive use of CNG fuel for Commercial Vehicles in the city of Delhi.
Bajaj is currently conducting pilot fleet manufacture and field trials of its Orbital direct-injection gasoline-powered autorickshaws.
Rather than using high pressure injection to atomize the fuel charge in a manner similar to diesel injection , Orbital uses an air-assisted low-pressure direct fuel injection, combustion and engine management system: the Orbital Combustion Process (OCP) technology. With OCP, compressed air breaks up the fuel droplets. OCP is in production on engines as small as 50cc and as large as 500cc per cylinder.
At light loads, the direct injection system allows engines to run very lean. Under high load conditions, the OCP system runs similar to a homogeneously charged engine, with good mixing of the fuel/air mixtures within the cylinder.