Invention Grant
US08408176B2 System and method for reducing hydrocarbon emissions in a gasoline direct injection engine
有权
用于减少汽油直喷发动机中碳氢化合物排放的系统和方法
- Patent Title: System and method for reducing hydrocarbon emissions in a gasoline direct injection engine
- Patent Title (中): 用于减少汽油直喷发动机中碳氢化合物排放的系统和方法
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Application No.: US12351711Application Date: 2009-01-09
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Publication No.: US08408176B2Publication Date: 2013-04-02
- Inventor: Ross Dykstra Pursifull , Daniel Dusa
- Applicant: Ross Dykstra Pursifull , Daniel Dusa
- 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 Julia Voutyras
- Main IPC: F02D41/06
- IPC: F02D41/06

Abstract:
A method is described for starting an engine of a motor vehicle under varying temperature conditions. The method may include during a first, higher-temperature, starting condition, directly injecting fuel into all of the combustion chambers the initial fueled cycle comprising crankshaft rotations during which at least some fuel is injected for a first time since the engine was brought from rest. Further, during a second, lower-temperature, starting condition, the method includes directly injecting fuel into less than all of the combustion chambers during at least the initial fueled cycle of the engine. In this way, it is possible to prevent the engine's pump from being outstripped during cold-start conditions at low engine temperatures. Also, it may allow subsequently fueled cylinders to start at a higher engine speed and lower manifold air pressure than otherwise possible, thereby further reducing the need for overfueling.
Public/Granted literature
- US20100175657A1 COLD-START RELIABILITY AND REDUCING HYDROCARBON EMISSIONS IN A GASOLINE DIRECT INJECTION ENGINE Public/Granted day:2010-07-15
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