发明名称 |
SYSTEMS AND METHODS FOR MULTIPLE ASPIRATORS FOR A CONSTANT PUMP RATE |
摘要 |
Methods and systems are provided for a parallel arrangement of at least two valved aspirators, with a high pressure source such as an intake throttle inlet coupled to a motive inlet of the arrangement and a low pressure sink such as an intake throttle outlet coupled to a mixed flow outlet of the arrangement. Intake throttle position and respective valves arranged in series with each aspirator of the arrangement are controlled based on intake manifold pressure and/or a desired engine air flow rate, for example such that a combined motive flow rate through the arrangement increases as intake manifold pressure increases. An intake throttle with a fully closed default position may be used in conjunction with the arrangement; during a fault condition where the intake throttle is fully closed, the valves of the arrangement may be controlled to achieve a controllable engine air flow rate during the fault condition. |
申请公布号 |
US2015040852(A1) |
申请公布日期 |
2015.02.12 |
申请号 |
US201313962526 |
申请日期 |
2013.08.08 |
申请人 |
Ford Global Technologies, LLC |
发明人 |
Pursifull Ross Dykstra |
分类号 |
F02M35/10 |
主分类号 |
F02M35/10 |
代理机构 |
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代理人 |
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主权项 |
1. A method for an engine, comprising:
increasing a combined motive flow rate through a parallel aspirator arrangement of at least two valved aspirators bypassing an intake throttle as intake manifold pressure increases. |
地址 |
Dearborn MI US |