Spatial domain optimal electric and hybrid electric vehicle control with path forecasting

Patent metadata

Field	Value
Publication number	US-9469213-B2
Application number	US-201314069628-A
Country	US
Kind code	B2
Filing date	Nov 1, 2013
Priority date	Nov 1, 2013
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

A vehicle engine, electric machine and battery are operated, in certain examples, such that a predetermined route is segmented based on varying criteria to determine target battery state of charge at the segment endpoints along the route. The endpoints are a superposition of endpoints defined by predicted powertrain operating mode transitions, predicted vehicle acceleration transitions or predicted road grade transitions along the route.

First claim

What is claimed is:

1. A vehicle comprising:
a battery;
an engine;
an electric machine; and
a controller programmed to, for each of a plurality of route segments having an endpoint defined by a location and a target battery state of charge (SOC), operate the engine and electric machine to achieve the target battery SOC, wherein the endpoints are a superposition of a first set of predicted engine on/off route transition points and a second set of predicted vehicle acceleration route transition points that is derived independently of the first set.

2. The vehicle of claim 1 , wherein the endpoints are further a superposition of a third set of predicted road grade route transition points derived independently of the first and second sets.

3. A control system comprising:
a controller programmed to, for each of a plurality of route segments having an endpoint defined by a location and a target battery state of charge (SOC), operate a powertrain to achieve the target battery SOC, the endpoints being a superposition of a first set of predicted engine on/off route transition points and a second set of predicted vehicle acceleration route transition points that is derived independently of the first set.

4. The system of claim 3 , wherein the endpoints are further a superposition of a third set of predicted road grade route transition points derived independently of the first and second sets.

5. The system of claim 3 , wherein each of the segments includes a superposition of sub-endpoints based on a fuel consumption estimation for the segment.

Assignees

• Ford Global Tech Llc

Inventors

• Zhao Yanan
• Kuang Ming Lang
• Phillips Anthony Mark

Classifications

• B60L2240/645

  Type of road · CPC title

• B60L15/2045

  for optimising the use of energy · CPC title

• B60W20/12

  using control strategies taking into account route information {(estimation or calculation of non-directly measurable driving parameters B60W40/00)} · CPC title

• B60L2210/10

  DC to DC converters · CPC title

• B60W2552/20

  Road profile, i.e. the change in elevation or curvature of a plurality of continuous road segments · CPC title