Cross section controlled multi-jet injection valve
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United States of America Patent
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Feb 1, 1994
Grant Date -
N/A
app pub date -
May 30, 1991
filing date -
May 30, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cross-section controlled multi-jet injection valve for an air-distributor injection in air-compressing combustion engines is provided. In order to fulfill the more stringent requirements and standards for exhaust fume quality it is necessary to provide a homogenous fuel/air mixture. This is achieved with a valve needle which is provided with an axially and radially oriented key. Due to this key a favorable ratio of injection cross-section to circumference of the respective cross-section is achieved. Accordingly, a division of the injection jet and a mixing with air is provided. Due to correspondingly adjusted pressure springs the injection pressure at varying amounts of fuel to be injected is kept constant which furthermore provides a constant homogeneity of the fuel/air mixture. Thus an excellent exhaust fume quality is obtained for the entire performance range.
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