Charged internal combustion engine

• US 6,920,755 B2
• Filed: 06/05/2003
• Issued: 07/26/2005
• Est. Priority Date: 05/11/2000
• Status: Expired due to Fees

• Current Assignee: BorgWarner Incorporated
• Original Assignee: BorgWarner Incorporated
• Inventors: Hoecker, Patric, Jaisle, Jens-Wolf, Münz, Stefan
• Primary Examiner(s): TRIEU, THAI BA
• Application Number:
  US10/455,537
• Publication Number:
  US 20030192312A1
• Time in Patent Office: 782 Days
• Field of Search: F02/B03.7/14, F02/B03.7/04, 606/12, 60606-610, 123/562, 123/565
• US Class Current: 60/612
• CPC Class Codes: F01N 3/32 using air pump using jet air pumps F01N3/34; pumps in general F04
• CPC Class Codes: F02B 29/0406 Layout of the intake air cooling or coolant circuit
• CPC Class Codes: F02B 37/04 Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
• CPC Class Codes: F02B 37/18 by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
• CPC Class Codes: F02B 39/10 electric
• CPC Class Codes: F02M 26/08 for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor
• CPC Class Codes: F02M 26/16 with EGR valves located at or near the connection to the exhaust system
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A charged internal combustion engine (1) having at least one stage of charging by a turbocharger (3), in which at least one supplemental compressor (4) is connected parallel to or in series with the turbocharger, and in which the supplemental compressor (4) has a drive independent from the working medium cycle of the internal combustion engine.

Claims

1. A charged internal combustion engine (1) including:

(a) at least one stage of charging by a turbocharger (3);

(b) at least one supplemental compressor (4) connected to the turbocharger,

(c) an electric motor (5) drive for the supplemental compressor (4), the electric motor regulated based on the boost pressure output of the turbocharger in relation to the prescribed boost pressure curve, so that the supplemental compressor is switched off when the required boost pressure is reached by the turbocharger; and

(d) at least one closing (11) or switching means (8) provided between the supplemental compressor (4) and the turbocharger,

wherein an electronic control device (40) is present to regulate operation of the supplemental compressor (4) and the closing (11) or switching (8) means.

2. The charged internal combustion engine (1) as in claim 1, wherein the supplemental compressor (4) is integrated in the intake pipe (17).

3. The charged internal combustion engine (1) as in claim 1, wherein the supplemental compressor (4) is mounted on the intake pipe (17).

4. The charged internal combustion engine (1) as in claim 1, wherein a spiral air guide is formed around the compressor wheel directly in the component incorporating the compressor.

5. The charged internal combustion engine (1) as in claim 1, wherein the intake pipe assembly includes the closing (11) or switching means (8) behind the supplemental compressor (4).

6. The charged internal combustion engine as in claim 1, wherein the intake pipe assembly includes a secondary air conduit (12).

7. The charged internal combustion engine as in claim 1, wherein the intake pipe assembly includes an exhaust gas return (16).

8. The charged internal combustion engine as in claim 1, wherein the intake pipe assembly includes an engine ventilation (12).

9. The charged internal combustion engine as in claim 1, wherein the intake pipe assembly includes an onboard diagnostic monitoring device and/or the sensors thereof.

10. The charged internal combustion engine (1) of claim 1, wherein the control (40) of the supplemental compressor (4) is a subsystem of the central internal combustion engine control (41).

11. The charged internal combustion engine (1) of claim 10, wherein the partial systems are connected to each other with a bus system (45).

12. The charged internal combustion engine (1) of claim 1, wherein the control means (40) for the supplemental compressor (4) is separate from the internal combustion engine control (41).

13. The charged internal combustion engine (1) as in claim 12, wherein the parameters monitored as to the engine operational condition provide an input value for the control electronics.

14. The charged internal combustion engine of claim 1, wherein the control (40) of the supplemental compressor (4) is a subsystem of the vehicle system.

15. The charged internal combustion engine as in claim 14, wherein the partial systems are connected to each other with a bus system (45).

16. A charged internal combustion engine (1) including:

(a) at least one stage of charging by a turbocharger (3);

(b) at least one supplemental compressor (4) connected to the turbocharger, wherein the supplemental compressor is integrated into an intake pipe assembly (18);

(c) an electric motor (5) drive for the supplemental compressor (4); and

(d) at least one closing (11) or switching means (8) provided between the supplemental compressor (4) and the turbocharger,

wherein an electronic control device (40) is present to regulate operation of the supplemental compressor (4) and the closing (11) or switching (8) means, wherein the drive of the supplemental compressor (4) is mounted with vibration decoupling in the intake pipe assembly which incorporates the supplemental compressor (4).

17. A charged internal combustion engine (1) including:

(a) at least one stage of charging by a turbocharger (3);

(b) at least one supplemental compressor (4) connected to the turbocharger (3);

(c) an electric motor drive (5) for the supplemental compressor (3); and

(d) at least one closing (11) or switching (8) means provided between the supplemental compressor (4) and the turbocharger,

wherein an electronic control device (40) is present to regulate operation of the supplemental compressor (4) and the closing (11) or switching (8) means, wherein the electric motor is regulated based on the boost pressure output of the turbocharger in relation to the prescribed boost pressure curve, so that the supplemental compressor is switched off when the required boost pressure is reached by the turbocharger, and wherein the drive of the supplemental compressor is coupled to a coolant circuit of the internal combustion engine in such a manner that the heat generated by the drive is dissipated.

18. A charged internal combustion engine (1) including:

(a) at least one stage of charging by a turbocharger (3);

(b) at least one supplemental compressor (4) connected to the turbocharger (3);

(c) an electric motor drive (5) for the supplemental compressor (3); and

(d) at least one closing (11) or switching (8) means provided between the supplemental compressor (4) and the turbocharger,

wherein an electronic control device (40) is present to regulate operation of the supplemental compressor (4) and the closing (11) or switching (8) means, wherein the electric motor is regulated based on the boost pressure output of the turbocharger in relation to the prescribed boost pressure curve, so that the supplemental compressor is switched off when the required boost pressure is reached by the turbocharger, and wherein the supplemental compressor and the turbocharger draw from the same intake area (10).