ATAC and GDI in a Small Two-Stroke Engine

Paper #:
  • 1999-01-3273

Published:
  • 1999-09-28
Citation:
Gentili, R. and Frigo, S., "ATAC and GDI in a Small Two-Stroke Engine," SAE Technical Paper 1999-01-3273, 1999, https://doi.org/10.4271/1999-01-3273.
Author(s):
Affiliated:
Pages:
9
Abstract:
In two-stroke S.I. engines, direct fuel injection prevents fuel short-circuiting from the exhaust port, however it does not solve per se combustion problems at light loads due to excessive ratio of residual-to-fresh gas.These problems can be solved by ATAC (Active Thermo Atmosphere Combustion), since residual-gas thermal energy is used to prime the combustion of fresh gas.Experimental results of a small two-stroke S.I. engine with medium-pressure air-assisted fuel injection, operating on ATAC at light loads are shown and prove the possibility to combine the two solutions.
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