Invention Grant
- Patent Title: Method and system for engine idle speed control
-
Application No.: US16201619Application Date: 2018-11-27
-
Publication No.: US10895206B2Publication Date: 2021-01-19
- Inventor: Ralph Cunningham , Ross Dykstra Pursifull
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: McCoy Russell LLP
- Agent Geoffrey Brumbaugh
- Main IPC: F02D31/00
- IPC: F02D31/00 ; F02D11/02 ; B60W20/00 ; B60K6/40 ; B60K6/54 ; B60K6/387 ; B60H1/00

Abstract:
Methods and systems are provided for improving fuel economy by opportunistically lowering engine idle speed below a base idle speed when electrical loads are not present. A hydraulic brake pressure is increased when the idle speed is raised, in anticipation of vehicle propulsion. The brake pressure counteracts any creep torque and unintended vehicle acceleration resulting from the rising engine idle speed.
Public/Granted literature
- US20200165987A1 METHOD AND SYSTEM FOR ENGINE IDLE SPEED CONTROL Public/Granted day:2020-05-28
Information query