Automated e-assist adjustment for an e-bike for elevation gains and loss

Patent metadata

Field	Value
Publication number	US-9857252-B2
Application number	US-201514950403-A
Country	US
Kind code	B2
Filing date	Nov 24, 2015
Priority date	Nov 24, 2015
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A system for, and method of, providing e-assist on a route. A determination may be made of whether terrain data for the route is available. A rider effort level may be determined. The terrain data may be read when available. Whether a change in slope has occurred, or is anticipated to occur, corresponding to a need for an additional input to the rider effort level may be determined. The e-assist level may be adjusted to provide a level that offsets the need for the additional input, or the rider may be informed to provide an increased effort level.

First claim

What is claimed is:

1. A method of providing e-assist over a route comprising determining whether terrain data is available for the route, reading a sensor when the route has flat terrain, determining a rider effort level using the sensor reading, reading the terrain data when available, determining whether a change in slope has occurred, or is anticipated to occur, corresponding to a need for an additional input to the rider effort level, adjusting the e-assist to provide an e-assist level that offsets the need for the additional input, or informing the rider to provide an increased effort level, reading the sensor after determining terrain data is not available to determine whether a torque level indicates the change in slope, and providing the e-assist when terrain data is not available by determining an e-assist adjustment based on the torque level and corresponding to the change in slope.

2. The method according to claim 1 further comprising providing an input device through which a rider manually inputs a rider effort level, wherein the step of determining the rider effort level comprises reading the rider effort level from the input device.

3. The method according to claim 1 wherein the terrain data comprises a terrain map of the route, and comprising reading the terrain map, determining from the terrain map whether an uphill terrain segment is anticipated on the route, providing an energy storage device, and optimizing rider effort to conserve a state of charge of the energy storage device by informing the rider through an interface device to provide additional input effort prior to reaching the uphill terrain, when the uphill terrain is anticipated.

4. The method according to claim 3 further comprising determining whether a downhill terrain segment is anticipated on the route, calculating a state of charge recuperation to be gained for the energy storage device from the downhill terrain segment, and informing the rider to reduce the rider effort level when the downhill terrain segment is anticipated.

5. The method according to claim 1 further comprising adjusting the level of e-assist maintaining the rider effort level at a consistent level regardless of an extent of the change in slope.

6. A method of providing e-assist over a route comprising determining whether terrain data is available for the route, reading a sensor when the route has flat terrain, determining a rider effort level using the sensor reading, reading the terrain data when available, determining whether a change in slope has occurred, or is anticipated to occur, corresponding to a need for an additional input to the rider effort level, adjusting the e-assist to provide an e-assist level that offsets the need for the additional input, or informing the rider to provide an increased effort level, wherein the step of determining the rider effort level comprises reading the sensor and averaging a plural number of the readings to arrive at the rider effort level.

7. A method of providing e-assist to a cycle travelling on a route comprising determining if a map with upcoming terrain data for the route is available, determining a rider effort level when the route has flat terrain, reading the map, determining whether the map indicates a change in slope on the route corresponding to a need for an additional input to the rider effort level to maintain a consistent driver effort level both when the route has flat terrain and after the change in slope has occurred, and adjusting a level of the e-assist to provide a level that offsets the need for additional input.

8. The method according to claim 7 further comprising reading a torque level only when the map is not available, the torque level indicative of the change in slope, and providing e-assist when the map is not available by determining an e-assist adjustment based on the torque level and corresponding to the change in slope.

9. The method according to claim 7 further comprising providing a sensor, measuring the rider effort level with the sensor, wherein the step of determining the rider effort level comprises reading the sensor when the route comprises flat terrain, and averaging a number of the torque sensor readings to arrive at the rider effort level.

10. The method according to claim 7 further comprising providing an input device through which a rider manually inputs a rider effort level, wherein the step of determining the rider effort level comprises reading the rider effort level from the input device.

11. The method according to claim 7 further comprising providing an energy storage device, and optimizing rider effort to conserve a state of charge of the energy storage device by informing the rider through an interface device to provide additional input effort.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Murugesan Prakash
• Manickaraj Mark A
• Chappell Michael J
• Zettel Andrew M

Classifications

• B62J45/4152

  for sensing longitudinal inclination of the cycle · CPC title

• B62M6/45 Primary

  Control or actuating devices therefor · CPC title

• B60L2200/12

  Bikes · CPC title

• B60L15/28

  without contact making and breaking, e.g. using a transductor · CPC title

• B62K2207/04

  Operations & Transport · mapped topic