A2OC
Moderator
When the Audi R8 with FSI engine won the Le Mans 24 Hours, this was not least the result of the unique combination of power and economy that characterises FSI technology.
FSI engines are all-rounders: they deliver more torque and power, and are therefore palpably more dynamic and efficient than engines with conventional indirect injection. What is more, they make it possible to reduce fuel consumption by up to 15 percent in production vehicles.
A quantum leap that is reminiscent of the revolution in diesel technology brought about by the TDI engines developed by Audi, and not without good reason: here too the company succeeded in combining high power and clearly reduced fuel consumption to a previously unknown extent.
To make this new form of mixture preparation and the modified combustion process possible, Audi's engine specialists had to develop a large number of new components and assemblies specifically for this purpose. These include:
a common rail fuel injection system with high-pressure injection pump
a four-valve cylinder head with laterally located injector and an intake port divided by a tumble plate
two-position tumble control
an external exhaust-gas recirculation system
an optimised emission treatment system, with NOx storage-type catalytic converter and NOx sensor
two-line exhaust-gas cooling with radiation cooler
The greatest challenge apart from exhaust-gas treatment proved to be the implementation of the necessary software in the engine control unit. This is because the many maps and the transitions between the operating states call for a computing capacity more than twice the norm.
Only with the aid of sophisticated computer simulations was it possible to match the complex, three-dimensional maps sufficiently.
This array of new features makes it clear that the new 1.6 FSI engine is far more than simply a refined version of its conventional predecessors. Its production start in the Audi A2 marks the start of a new era for Audi spark-ignition engines and lends yet more substance to Audi's proverbial "Vorsprung durch Technik".
© Audi AG
FSI engines are all-rounders: they deliver more torque and power, and are therefore palpably more dynamic and efficient than engines with conventional indirect injection. What is more, they make it possible to reduce fuel consumption by up to 15 percent in production vehicles.
A quantum leap that is reminiscent of the revolution in diesel technology brought about by the TDI engines developed by Audi, and not without good reason: here too the company succeeded in combining high power and clearly reduced fuel consumption to a previously unknown extent.
To make this new form of mixture preparation and the modified combustion process possible, Audi's engine specialists had to develop a large number of new components and assemblies specifically for this purpose. These include:
a common rail fuel injection system with high-pressure injection pump
a four-valve cylinder head with laterally located injector and an intake port divided by a tumble plate
two-position tumble control
an external exhaust-gas recirculation system
an optimised emission treatment system, with NOx storage-type catalytic converter and NOx sensor
two-line exhaust-gas cooling with radiation cooler
The greatest challenge apart from exhaust-gas treatment proved to be the implementation of the necessary software in the engine control unit. This is because the many maps and the transitions between the operating states call for a computing capacity more than twice the norm.
Only with the aid of sophisticated computer simulations was it possible to match the complex, three-dimensional maps sufficiently.
This array of new features makes it clear that the new 1.6 FSI engine is far more than simply a refined version of its conventional predecessors. Its production start in the Audi A2 marks the start of a new era for Audi spark-ignition engines and lends yet more substance to Audi's proverbial "Vorsprung durch Technik".
© Audi AG