Christopher B Gregg

US Patent:

8125181, Feb 28, 2012

Filed:

Sep 17, 2008

Appl. No.:

12/212552

Inventors:

Christopher B. Gregg - Gardena CA, US
Yusuke Kamijo - Gardena CA, US
Yoshikatsu Nakamura - Ann Arbor MI, US

Assignee:

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

International Classification:

H02J 7/14
B60W 10/24
H05K 7/14

US Classification:

320104, 320116, 320139, 180 6529, 307149

Abstract:

The present invention relates to a method and an apparatus for hybrid vehicle auxiliary battery state of charge control. In one embodiment, the present invention is an automobile including an electronic accessory, a first battery connected to the electronic accessory, and a control unit connected to the first battery, the control unit monitoring the first battery and disconnecting the first battery from the electronic accessory when the first battery is in a first operational condition.

US Patent:

20130274975, Oct 17, 2013

Filed:

Jan 9, 2013

Appl. No.:

13/737869

Inventors:

Christopher Gregg - Gardena CA, US
Justin Ward - Gardena CA, US
Hidetoshi Kusumi - Gardena CA, US

Assignee:

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

International Classification:

B60W 10/196
B60W 30/188
B60W 10/30

US Classification:

701 22

Abstract:

A regenerative braking system for a vehicle utilizing diversion of energy for efficient use or maintaining consistent vehicle performance. The regenerative braking system includes a generator for producing regenerative energy during slowing and includes switches connected to a battery and a plurality of devices. A processor is connected with the battery and the switches for controlling the configuration of the switches based on a characteristic of the battery. If the battery has a state of charge exceeding a predetermined threshold, the processor controls the switches to route the regenerative energy to the other devices. The processor also controls the switches to provide regenerative energy to specific devices where it may most desirably be utilized. Heating and cooling units of the vehicle may be alternatively or simultaneously connected to receive the regenerative energy for providing consistent vehicle slowing performance when the battery state of charge exceeds the predetermined threshold.

US Patent:

20130274993, Oct 17, 2013

Filed:

Aug 14, 2012

Appl. No.:

13/585647

Inventors:

Christopher Gregg - Gardena CA, US
Nicholas S. Sitarski - Ypsilanti MI, US

Assignee:

Toyota Motor Engineering & Manufacturing North America - Erlanger KY

International Classification:

G06F 19/00

US Classification:

701 334

Abstract:

A trip data management and display system for a vehicle. The system includes a processor, a memory, a user-interface and a display. During a trip traveled by the vehicle, the processor receives data from one or more systems or components. The processor receives input via the user-interface to associate a category and a filename with the received data for storage in the memory. The stored data may then be retrieved for display upon the display of the vehicle. The trip traveled by the vehicle is predefined according to user-settable parameters or is automatically determined based on vehicle characteristics. Instantaneous data corresponding to a trip currently being traveled by the vehicle may also be displayed on the display adjacent to the stored data from memory. The data stored may be managed by a user to associate it with different or multiple categories or to delete particular stored data.

US Patent:

20220194233, Jun 23, 2022

Filed:

Dec 16, 2021

Appl. No.:

17/553141

Inventors:

- Vancouver WA, US
Christopher Gregg - Vancouver WA, US
Victor T. Oke - Vancouver WA, US

International Classification:

B60L 15/20
B60L 7/10
B60K 7/00
B60L 50/60

Abstract:

In one aspect of the present disclosure, a method is provided for operating a vehicle system comprising a motor, a battery, and a controller. The vehicle system is configured to provide at least one of regenerative braking wherein the motor operates to charge the battery and propulsion wherein the motor uses electrical power from the battery to propel the vehicle. The method includes, at the controller, determining an effective motor power at a motor speed and a motor torque. The effective motor power is determined based at least in part on a calculated motor power and an electrical power loss of the motor corresponding to the motor speed and the motor torque. The method further includes causing the motor to apply the motor torque to a wheel of the vehicle upon the effective motor power satisfying an operating condition of the vehicle system.

US Patent:

20200393842, Dec 17, 2020

Filed:

Jun 17, 2019

Appl. No.:

16/442904

Inventors:

- Los Altos CA, US
Christopher Gregg - Mountain View CA, US
Ewaldo Eder Carvalho Santana, JR. - Mountain View CA, US

Assignee:

Toyota Research Institute, Inc. - Los Altos CA

International Classification:

G05D 1/02
G05B 13/02
G05D 1/00

Abstract:

A system for determining when a vehicle has learned a route is provided. The system includes at least one camera configured to capture image data of an external environment, a processor and a memory module storing one or more processor-readable instructions that, when executed by the processor, cause the system to: generate one or more predictions about objects in the external environment as the vehicle proceeds along the route based on the image data, determine a prediction error based on an accuracy of the one or more predictions, determine a confidence level for the route based on the prediction error, and determine that the vehicle has learned the route in response to the confidence level exceeding a confidence level threshold.