Invention Grant
- Patent Title: Method and system for controlling vacuum
- Patent Title (中): 控制真空的方法和系统
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Application No.: US12899370Application Date: 2010-10-06
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Publication No.: US08087397B2Publication Date: 2012-01-03
- Inventor: Ralph Wayne Cunningham , Amey Y. Karnik
- Applicant: Ralph Wayne Cunningham , Amey Y. Karnik
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: Alleman Hall McCoy Russell & Tuttle LLP
- Agent Allan J. Lippa
- Main IPC: F02D9/08
- IPC: F02D9/08 ; F02D9/00
Abstract:
An engine with a two vacuum sources is disclosed. In one example, a valve position is adjusted in when engine load is low and intake manifold pressure is low to arbitrate vacuum between the two vacuum sources. The approach may increase engine operating efficiency during at least some conditions.
Public/Granted literature
- US20110174266A1 METHOD AND SYSTEM FOR CONTROLLING VACUUM Public/Granted day:2011-07-21
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