Invention Grant
- Patent Title: Separately determining firing density and pumping density during firing density transitions for a lean-burn internal combustion engine
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Application No.: US16576972Application Date: 2019-09-20
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Publication No.: US11053828B2Publication Date: 2021-07-06
- Inventor: Shikui Kevin Chen , Matthew A. Younkins , Louis J. Serrano
- Applicant: Tula Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Tula Technology, Inc.
- Current Assignee: Tula Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Beyer Law Group LLP
- Main IPC: F01N3/20
- IPC: F01N3/20 ; F02D41/00 ; F01N11/00 ; F01N3/021 ; F02D41/40 ; F01N13/00 ; F01N3/08
Abstract:
A skip fire engine controller and method of control is described wherein during transitions from a first firing density to a second firing density, a firing density and a pumping density are separately set so as to balance the conflicting demands of (a) torque control, (b) Noise, Vibration and Harshness (NVH), (c) air flow through the engine and (d) air-fuel ratio.
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