SYSTEM AND METHOD OF CONTROLLING MOTOR VEHICLE OPERATION

• US 20130103282A1
• Filed: 10/24/2012
• Published: 04/25/2013
• Est. Priority Date: 10/25/2011
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: Oh, Jonghan, Kim, Jeongeun
• Granted Patent: US 9,108,623 B2
• Time in Patent Office: Days
• US Class Current: 701/84
• CPC Class Codes: B60K 2026/046 with electrical transmission means
• CPC Class Codes: B60K 26/04 of means connecting initiating means or elements to propulsion unit
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2710/105 Output torque
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

The present disclosure provides a system and a method of controlling motor vehicle operation. The method may include: setting a creep torque as a minimum torque; setting a maximum torque as a sum of a maximum torque of an engine and a maximum torque of a motor; monitoring an acceleration pedal position sensor (APS) value; calculating a demand torque according to the APS value; setting a filter coefficient for filtering the demand torque according to an operating condition of the vehicle; and filtering the demand torque by means of the filter coefficient.

Claims

1. A method of controlling motor vehicle operation, comprising:

setting, by a control unit, a creep torque as a minimum torque;

setting, by the control unit, a maximum torque as a sum of a maximum torque of an engine and a maximum torque of a motor;

monitoring a pedal position sensor (PPS) value;

calculating, by the control unit, a demand torque based on the PPS value;

setting, by the control unit, a filter coefficient for filtering the demand torque based on an operating condition of the vehicle; and

filtering the demand torque with the filter coefficient.

2. The method of claim 1, wherein the pedal position sensor is an accelerator pedal position sensor (APS).

3. The method of claim 1, wherein the pedal position sensor is a brake pedal position sensor (BPS).

4. The method of claim 1, wherein the operating condition is selected from the group consisting of a traction control system (TCS), an electronic stability program (ESP), a state of charge (SOC), a rate of change of the APS value, a rate of change of the BPS value, and a current driving mode.

5. The method of claim 1, wherein the operating condition is the rate change of the APS value.

6. The method of claim 1, wherein the operating condition is the rate change of the BPS value.

7. The method of claim 2, wherein each possible driving condition is assigned a priority value.

8. The method of claim 7, wherein the filter coefficient is set to correspond to the driving conditions with high priority values.

9. A system of controlling hybrid motor vehicle operation, comprising:

an engine;

a motor;

one or more operation condition sensors configured to produce sensor values; and

a control unit,

wherein the control unit is adapted to control an engine and a motor, and to select a demand torque based on one or more of the sensor values.

10. The system of claim 9, wherein the one or more operation condition sensors are selected from the group consisting of a traction control system (TCS), an electronic stability program (ESP), a state of charge (SOC), a rate of change of the APS value, a rate of change of the BPS value, and a current driving mode.

11. The system of claim 10, wherein the operation condition sensor is the APS value.

12. The system of claim 10, wherein the operation condition sensor is the BPS value.

13. The system of claim 9, wherein the control unit is further configured to filter the demand torque by means of a filter coefficient according to the one or more operation condition sensor values.

14. The system of claim 9, wherein the control unit is further configured to assign a priority value to each operation condition sensor value.

15. The system of claim 14, wherein the filter coefficient corresponds to the operation condition sensor value having the higher priority value.