System and method for controlling vibration of engine

Patent metadata

Field	Value
Publication number	US-9777650-B2
Application number	US-201514956068-A
Country	US
Kind code	B2
Filing date	Dec 1, 2015
Priority date	Sep 16, 2015
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

The present disclosure relates to a system for controlling vibration of an engine including an engine inertia portion which rotates together with the engine and a sub-inertia portion which influences a rotation speed of the engine and is separately provided, and a damper which is disposed between the engine inertia portion and the sub-inertia portion for reducing a vibration. The present disclosure includes: determining whether a vehicle is in an idle state; sensing rotation speeds of the engine inertia portion and the sub-inertia portion, respectively; calculating an average value of the rotation speeds of the engine inertia portion and the sub-inertia portion; calculating an error value from the average value; and PI controlling by receiving the error value.

First claim

What is claimed is:

1. A system for controlling vibration of an engine, including an engine inertia portion which rotates together with the engine and a sub-inertia portion which is separately provided in order to influence a rotation speed of the engine, and a damper which is disposed between the engine inertia portion and the sub-inertia portion for reducing a vibration, comprising:
an engine rotation speed sensor which senses a rotation speed of the engine inertia portion;
a sub-rotation speed sensor which senses a rotation speed of the sub-inertia portion; and
a control portion which receives each of the rotation speeds obtained from the engine rotation speed sensor and the sub-rotation speed sensor and stores signals which are converted from each of the rotation speeds, respectively,
wherein the control portion is configured to control the rotation speed of the engine using an error value which is calculated by subtracting an average value which is between each of the rotation speeds obtained from the engine rotation speed sensor and the sub-rotation speed sensor, from a predetermined engine rotation speed value in an idle state.

2. The system for controlling vibration of an engine of claim 1 , wherein the error value is inputted into a Proportional Integral (PI) control.

3. The system for controlling vibration of an engine of claim 2 , wherein the average value is an arithmetic mean between each of the rotation speeds obtained by the engine rotation speed sensor and the sub-rotation speed sensor, respectively.

4. A method for controlling vibration of an engine including an engine inertia portion which rotates together with the engine and a sub-inertia portion which is separately provided in order to influence a rotation speed of the engine, and a damper which is disposed between the engine inertia portion and the sub-inertia portion for reducing a vibration, comprising:
determining whether a vehicle is in an idle state;
sensing a rotation speed of the engine inertia portion and a rotation speed of the sub-inertia portion;
calculating an average value of the rotation speeds of the engine inertia portion and the sub-inertia portion;
calculating an error value from the average value; and
operating Proportional Integral (PI) control based on the error value.

5. The method for controlling vibration of an engine of claim 4 , wherein the error value is obtained by subtracting the average value from a predetermined engine rotation speed value in the idle state.

6. The method for controlling vibration of an engine of claim 5 , further comprising:
adjusting required engine torque such that the engine is maintained at a predetermined rotation speed through the PI control; and
adjusting an amount of fuel such that the engine is maintained at a predetermined rotation speed.

7. The method for controlling vibration of an engine of claim 4 , wherein a rotation speed signal of the sub-inertia portion and a rotation speed signal of the engine inertia portion are inverse from each other.

8. The method for controlling vibration of an engine of claim 5 , wherein the predetermined engine rotation speed value is plural depending on a driving condition.

9. The method for controlling vibration of an engine of claim 5 , wherein the PI control is realized as a plurality of modes depending on a driving condition.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Oh Wan Soo
• Shin Seok Young
• Lee Heungseok

Classifications

• F02D2041/1409

  using at least a proportional, integral or derivative controller · CPC title

• F02D41/16

  for idling · CPC title

• F02D31/008

  for idle speed control · CPC title

• F02D41/021 Primary

  Introducing corrections for particular conditions exterior to the engine (conjoint control of vehicle sub-units for propelling the vehicle B60W30/18) · CPC title

• F16F15/131

  the rotating system comprising two or more gyratory masses · CPC title