Study of Fuel Flow Rate Change in Injector for Methanol Fueled S.I. Engine

Paper #:
  • 950071

Published:
  • 1995-02-01
Citation:
Kinoshita, M., Saito, A., and Otsubo, K., "Study of Fuel Flow Rate Change in Injector for Methanol Fueled S.I. Engine," SAE Technical Paper 950071, 1995, https://doi.org/10.4271/950071.
Pages:
10
Abstract:
The change of the fuel flow rate in an injector with mileage accumulation causes poor drivability and exhaust emission deterioration in Otto-type methanol fueled vehicles with a multi-point fuel injection system. This is one of the serious problems which needs to be solved for the practical use of methanol fueled vehicles. The investigation results reveal that the wear of contact surfaces between a valve needle and a valve body increases the resistance force for valve needle movement and causes the change of dynamic fuel flow rate in the injector. The effects of several countermeasures to solve this problem are evaluated.
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