Invention Grant
- Patent Title: Compression ignition engine with low load rapid warm up strategy
- Patent Title (中): 压缩点火发动机低负荷快速预热策略
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Application No.: US13494438Application Date: 2012-06-12
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Publication No.: US08997456B2Publication Date: 2015-04-07
- Inventor: Matthew Wolk , Gurudutt Nayak
- Applicant: Matthew Wolk , Gurudutt Nayak
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: BakerHostetler
- Main IPC: F01N3/18
- IPC: F01N3/18 ; F02B37/24 ; F02D41/00 ; F02D41/02 ; F02D41/40 ; F02M25/07

Abstract:
An electronically controlled compression ignition engine includes an electronic engine controller in control communication with fuel injectors, a high pressure exhaust recirculation system and a variable geometry turbocharger. The controller is configured to execute a low load rapid warm up algorithm that generates control signals to reduce turbine efficiency, set an air fuel ratio in a predetermined range, set the exhaust gas recirculation in a predetermine range and supply fuel in a split injection in each engine cycle that includes a main injection initiated before top dead center and a post injection initiated after top dead center. These settings allow for rapid warm up to the aftertreatment inlet in excess of 300° C.
Public/Granted literature
- US20130332051A1 Compression Ignition Engine With Low Load Rapid Warm Up Strategy Public/Granted day:2013-12-12
Information query
IPC分类: