Supercharging engine

Patent metadata

Field	Value
Publication number	US-9512789-B2
Application number	US-201414546165-A
Country	US
Kind code	B2
Filing date	Nov 18, 2014
Priority date	Dec 18, 2013
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A supercharging engine supplying compressed air to a combustion chamber as intake air may include at least two cylinders, a deactivation cylinder being at least one of the cylinders, and selectively deactivated, a compressed air tank adapted to store compressed air supplied from a combustion chamber of the deactivation cylinder, a compressed air storage passage formed to communicate the compressed air tank with the combustion chamber of the deactivation cylinder, an intake manifold selectively communicating with the compressed air tank, and a compressed air valve selectively opening/closing the compressed air storage passage, in which compressed air may be transmitted from the combustion chamber of the deactivation cylinder to the compressed air tank as the compressed air valve is opened in a compression stroke during deactivation of the deactivation cylinder.

First claim

What is claimed is:

1. A supercharging engine supplying compressed air to a combustion chamber as intake air, the supercharging engine comprising:
at least two cylinders;
a deactivation cylinder being one of the at least two cylinders, being deactivated;
a compressed air tank adapted to store compressed air supplied from a combustion chamber of the deactivation cylinder;
a compressed air storage passage formed to communicate the compressed air tank with the combustion chamber of the deactivation cylinder;
an intake manifold selectively communicating with the compressed air tank via a supply valve; and
a compressed air valve opening/closing the compressed air storage passage;
wherein compressed air is transmitted from the combustion chamber of the deactivation cylinder to the compressed air tank as the compressed air valve is opened in a compression stroke during deactivation of the deactivation cylinder; and
wherein the compressed air storage passage has a compressed air pipe which is branched so as to communicate with at least two combustion chambers of the deactivation cylinders.

2. The supercharging engine of claim 1 , wherein the compressed air is supplied to the intake manifold and supercharged to the combustion chamber as the compressed air tank communicates with the intake manifold.

3. The supercharging engine of claim 1 , wherein the compressed air pipe is communicated with a reef top of the combustion chamber of each deactivation cylinder, and the compressed air valve is operated as zero lift or normal lift by a variable valve lift apparatus so as to open/close the compressed air pipe.

4. The supercharging engine of claim 3 , wherein the compressed air valve has the zero lift during normal operation and selectively has the normal lift during the deactivation of the deactivation cylinder.

5. The supercharging engine of claim 1 , further comprising:
a check valve disposed in the compressed air storage passage, preventing backflow of the compressed air transmitted to the compressed air tank.

6. The supercharging engine of claim 1 , further comprising:
an exhaust valve opened/closed to perform exhaust of the combustion chamber; and
an intake valve opened/closed to perform intake of the combustion chamber;
wherein the exhaust valve is closed when the deactivation cylinder is deactivated.

7. The supercharging engine of claim 6 , wherein the exhaust valve is operated as zero lift or normal lift by a variable valve lift apparatus, and has the normal lift during normal operation and has the zero lift during the deactivation of the deactivation cylinder.

8. The supercharging engine of claim 6 , wherein the intake valve is operated as high lift or low lift by a variable valve lift apparatus, and has the high lift during normal operation and has the low lift when the deactivation cylinder is deactivated.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Lee Jangsu
• Jun Jongman
• Lee Hyeungwoo
• Cho Hyosang
• Yu Seungeun
• Kim Hyounghyoun

Classifications

• F01L13/0015

  for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque · CPC title

• Y02T10/18

  Cross-Sectional Technologies · mapped topic

• F02D13/06

  Cutting-out cylinders · CPC title

• F02D17/026 Primary

  delivering compressed fluid, e.g. air, reformed gas, to the active cylinders other than during starting · CPC title

• F02B33/44

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