System for correcting turbo lag

Patent metadata

Field	Value
Publication number	US-10794267-B2
Application number	US-201916394638-A
Country	US
Kind code	B2
Filing date	Apr 25, 2019
Priority date	Nov 20, 2018
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

A system for correcting turbo lag of a diesel engine vehicle equipped with a turbo charger and a vacuum pump according to the present disclosure may include: a chamber being supplied with an air/oil mixture discharged from the vacuum pump, separating and storing the mixture into air and oil, and including a first valve for spraying the air and a second valve for discharging the oil; an accelerator pedal sensor sensing a depression extent of an accelerator pedal of the vehicle; a first pressure sensor sensing the pressure of the air compressed in the chamber; and a controller controlling the first valve in accordance with the depression extent of the accelerator pedal sensed by the accelerator pedal sensor.

First claim

What is claimed is:

1. A system for correcting turbo lag of a diesel engine vehicle equipped with a turbo charger and a vacuum pump, the system comprising:
a chamber comprising a top wall and a bottom wall connected by side walls, the chamber having an interior space formed by the top wall, the bottom wall, and the side walls, the chamber to be supplied with an air/oil mixture discharged from the vacuum pump, to separate the air/oil mixture into air and oil and to store the air and the oil within the interior space of the chamber, wherein the chamber includes a first valve for spraying the air and a second valve for discharging the oil and wherein the bottom wall is inclined downward from the side walls to a specific point on the bottom wall such that the oil separated by the chamber can collect at the specific point;
an accelerator pedal sensor configured to sense a depression extent of an accelerator pedal of the vehicle;
a first pressure sensor configured to sense pressure of the air compressed in the chamber; and
a controller configured to control the first valve in accordance with the depression extent of the accelerator pedal sensed by the accelerator pedal sensor.

2. The system of claim 1 , wherein the chamber further includes an air/oil separator configured to separate the air/oil mixture discharged from the vacuum pump into the air and the oil.

3. The system of claim 1 , wherein the second valve is formed at the specific point on the bottom wall of the chamber.

4. The system of claim 1 , wherein the first valve is formed at the turbo charger.

5. The system of claim 4 , wherein, when the depression extent of the accelerator pedal is a predetermined depression extent or more, the controller is configured to open the first valve so that the air compressed and stored in the chamber is sprayed to the turbo charger through the first valve.

6. The system of claim 1 , wherein the first valve is connected to an inlet of an intake manifold of a diesel engine of the diesel engine vehicle.

7. The system of claim 6 , wherein, when the depression extent of the accelerator pedal is a predetermined depression extent or more, the controller is configured to open the first valve so that the air compressed and stored in the chamber is sprayed to the inlet of the intake manifold through the first valve.

8. The system of claim 6 , further comprising a second pressure sensor configured to sense pressure in the intake manifold, wherein the controller is configured to compare the pressure sensed by the second pressure sensor with the pressure of the air compressed in the chamber sensed by the first pressure sensor, and to control the first valve not to open when the pressure in the intake manifold is higher than the pressure of the air compressed in the chamber.

9. The system of claim 6 , further comprising a one-way valve disposed between the first valve and the intake manifold.

10. The system of claim 1 , wherein the second valve is an electronic control valve.

11. The system of claim 10 , wherein the controller is configured to control the second valve in accordance with the pressure of the air compressed in the chamber sensed by the first pressure sensor.

12. The system of claim 1 , wherein the second valve is a relief valve.

13. A diesel engine vehicle comprising:
a turbo charger;
a vacuum pump;
a chamber comprising a top wall and a bottom wall connected by side walls, the chamber having an interior space formed by the top wall, the bottom wall, and the side walls, the chamber to be supplied with an air/oil mixture discharged from the vacuum pump, to separate the air/oil mixture into air and oil, and to store the air and the oil within the interior space of the chamber, wherein the chamber includes a first valve for spraying the air and a second valve for discharging the oil and wherein the bottom wall is inclined downward from the side walls to a specific point on the bottom wall such that the oil separated by the chamber can collect at the specific point;
an accelerator pedal sensor configured to sense a depression extent of an accelerator pedal of the vehicle;
a first pressure sensor configured to sense pressure of the air compressed in the chamber; and
a controller configured to control the first valve in accordance with the depression extent of the accelerator pedal sensed by the accelerator pedal sensor.

14. The vehicle of claim 13 , wherein the second valve is formed at the specific point on the bottom wall of the chamber.

15. The vehicle of claim 13 , wherein the first valve is formed at the turbo charger and wherein, when the depression extent of the accelerator pedal is a predetermined depression extent or more, the controller is configured to open the first valve so that the air compressed and stored in the chamber is sprayed to the turbo charger through the first valve.

16. A method for correcting turbo lag of a diesel engine vehicle equipped with a turbo charger and a vacuum pump, the method comprising:
supplying a chamber with an air/oil mixture discharged from the vacuum pump, wherein the chamber comprises a top wall and a bottom wall connected by side walls, the chamber having an interior space formed by the top wall, the bottom wall, and the side walls, wherein the bottom wall is inclined downward from the side walls to a specific point on the bottom wall;
separating the air/oil mixture into air and oil;
storing the air and the oil in the interior space of the chamber, the oil collecting at the specific point on the bottom wall;
sensing a depression extent of an accelerator pedal of the vehicle;
sensing pressure of the air stored in the interior space of the chamber; and
spraying the air stored in the interior space of the chamber, the spraying controlled in accordance with the depression extent of the accelerator pedal.

17. The method of claim 16 , further comprising discharging the oil through a valve.

18. The method of claim 16 , wherein spraying the air comprises spraying the air to the turbo charger.

19. The method of claim 16 , wherein spraying the air comprises spraying the air to an inlet of an intake manifold through a valve.

20. The method of claim 19 , wherein storing the air in the interior space of the chamber comprises compressing the air in the chamber, the method further comprising:
sensing a pressure in the intake manifold;
comparing the pressure sensed in the intake manifold with a pressure of the air compressed in the chamber; and
controlling the valve not to open when the pressure in the intake manifold is higher than the pressure of the air compressed in the chamber.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Lee Joon Myung
• Kim Sung Soo
• Jang Kyoung Ik
• Park Jeon Jin

Classifications

• F02D41/10

  for acceleration · CPC title

• F02B33/44

  Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs · CPC title

• F02B39/16 Primary

  Other safety measures for, or other control of, pumps · CPC title

• F02D41/0007

  for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12) · CPC title

• F02D2200/602

  Pedal position · CPC title