Engine system

Patent metadata

Field	Value
Publication number	US-9494076-B2
Application number	US-201414447206-A
Country	US
Kind code	B2
Filing date	Jul 30, 2014
Priority date	Dec 17, 2013
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

An engine system may include a first intake line configured to supply external air to an intake manifold mounted in a cylinder block of an engine, an intake bypass valve disposed on the first intake line, a second intake line configured to bypass the intake bypass valve, a first exhaust line, through which exhaust gas discharged from an exhaust manifold mounted in the cylinder block flows, an exhaust bypass valve disposed on the first exhaust line, a second exhaust line configured to bypass the exhaust bypass valve, a turbo charger operated by exhaust gas passing through the second exhaust line, and configured to pump intake air flowing in the second intake line, a controller configured to control the intake bypass valve and the exhaust bypass valve, and a turbine housing configured to surround a turbine of the turbo charger. The turbine housing may be made of a material the same as that of a cylinder head of the engine.

First claim

What is claimed is:

1. An engine system, comprising:
a first intake line connected to an intake manifold and configured to supply external air to the intake manifold mounted in a cylinder block of an engine;
an intake bypass valve disposed on the first intake line;
a second intake line configured to bypass the intake bypass valve;
a first exhaust line connected to the exhaust manifold, wherein through the first exhaust line exhaust gas discharged from the exhaust manifold mounted in the cylinder block flows;
an exhaust bypass valve disposed on the first exhaust line;
a second exhaust line connected to the exhaust manifold and configured to bypass the exhaust bypass valve;
a turbo charger disposed on the second exhaust line, operated by exhaust gas passing through the second exhaust line, and configured to pump intake air flowing in the second intake line;
a controller configured to control the intake bypass valve and the exhaust bypass valve; and
a turbine housing configured to surround a turbine of the turbo charger,
wherein the turbine housing is made of a material the same as that of a cylinder head of the engine, and
wherein the turbine housing is integrally or monolithically formed with the cylinder head.

2. The engine system of claim 1 , further comprising:
an intercooler installed in the second intake line at a downstream side of a compressor of the turbo charger.

3. The engine system of claim 1 , further comprising:
a throttle body configured to control an intake flow rate supplied to the intake manifold.

4. The engine system of claim 1 , wherein:
the controller opens the intake bypass valve and the exhaust bypass valve when a load is lower than a predetermined load value in a section in which revolutions per minute (RPM) of the engine are lower than a predetermined RPM value, and
the controller controls an output by controlling an opening rate of the exhaust bypass valve.

5. The engine system of claim 1 , wherein:
the controller closes the intake bypass valve and opens the exhaust bypass valve when a load is higher than a predetermined load value in a section in which revolutions per minute of the engine are lower than a predetermined RPM value, and
the controller controls an output by controlling an opening rate of the exhaust bypass valve.

6. The engine system of claim 1 , wherein:
the controller opens the intake bypass valve and the exhaust bypass valve in a section in which revolutions per minute of the engine are higher than a predetermined RPM value, and
the controller controls an output by controlling an opening rate of the exhaust bypass valve.

7. The engine system of claim 1 , wherein:
the second intake line is branched from an air cleaner box, and is joined to the first intake line by sequentially passing through a compressor of the turbo charger and an intercooler.

8. The engine system of claim 1 , wherein:
the second exhaust line is branched from the exhaust manifold, and is joined to the first exhaust line by passing through a turbine of the turbo charger.

9. The engine system of claim 1 , wherein:
a capacity of the turbo charger is set to have a minimum value capable of obtaining a maximum output torque at a predetermined low-speed region of the engine adopting a natural aspiration method.

10. The engine system of claim 1 , wherein:
the turbine housing is cooled by a coolant supplied to the cylinder head.

11. The engine system of claim 10 , wherein:
the coolant cooling the turbine housing is supplied to the cylinder head again.

12. The engine system of claim 1 , wherein:
the turbine housing is cooled by a coolant directly supplied from a water pump.

13. The engine system of claim 1 , wherein:
the turbine housing is cooled by a coolant supplied to the turbo charger.

14. The engine system of claim 13 , wherein:
a path of the coolant supplied to the turbo charger passes through the turbine housing.

15. The engine system of claim 1 , wherein:
the turbine housing is made of an aluminum material.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Park Jong Il
• Lee Joowon
• Joo Nahm Roh
• Kim Yoon Joo
• Han Dong Hee
• Hwang Il Joong
• Lim Hyun Jun

Classifications

• Y02T10/144

  Cross-Sectional Technologies · mapped topic

• F01P2060/12

  Turbo charger · CPC title

• F02B37/183 Primary

  Arrangements of bypass valves or actuators therefor · CPC title

• F01P7/165

  characterised by systems with two or more loops · CPC title

• F01P2003/027

  Cooling cylinders and cylinder heads in parallel · CPC title