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Combustion Diagnosis of Formula One Engine Using Micro-Cassegrain Sensor

Article of Honda R&D Technical Review F1 Special (The third Era Activities)


Combustion diagnosis of a Formula One engine during wide open throttle (WOT) acceleration and deceleration operations was performed using a micro-Cassegrain system.
The air/fuel mixture (A/F) in each cylinder was measured, which helped in the development of controls to minimize the torque loss due to unstable combustion.
In transient conditions where acceleration and deceleration are performed repeatedly, the air/fuel mixture around the spark plugs becomes too rich or too lean, and results in unstable combustion. In addition, the air/fuel mixture formation is different inside each cylinder.
The fuel distribution to each cylinder needed to be controlled to a high degree of accuracy, and to do this, a highly responsive air/fuel ratio sensor (LAF sensor) is required.


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Author (organization or company)

Naoki HANADA(Automobile R&D Center)、Atsushi HIRAIDE(Automobile R&D Center)、Kohei YAMADA(Automobile R&D Center)、Yuji IKEDA(Imagineering, Inc.)、Atsushi NISHIYAMA(Imagineering, Inc.)

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