Title:
ガスエンジン及びその運転制御方法
Document Type and Number:
Japanese Patent JP6479489
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To further improve thermal efficiency even in a configuration in which a check valve for controlling supply of fuel gas is installed in an auxiliary chamber.SOLUTION: A gas engine A includes: a main chamber 60 defined between a piston and a cylinder head 1; an auxiliary chamber 4 communicated with the main chamber 60 via nozzle holes 3; and an auxiliary chamber gas supply passage 14 for supplying fuel gas to the auxiliary chamber 4. By using a check valve 6 of which opening/closing period is determined based on a pressure difference between supply pressure of the fuel gas and cylinder pressure on the main chamber 60 side, the supply of the fuel gas to the auxiliary chamber 4 i controlled. The gas engine A further includes an optimal auxiliary chamber gas amount/ignition timing computing device 32 for calculating a combination of the auxiliary chamber gas amount and auxiliary chamber ignition timing so as to enhance thermal efficiency within a limit of the cylinder pressure. An auxiliary chamber gas supply pressure control device 30 supplies the auxiliary chamber gas amount calculated by the optimal auxiliary chamber gas amount/ignition timing computing device 32 to the auxiliary chamber, and an ignition timing control device 31 ignites an air-fuel mixture at ignition timing calculated by the optimal auxiliary chamber gas amount/ignition timing computing device 32.SELECTED DRAWING: Figure 1
More Like This:
| JPS63159656 | CHECK VALVE FOR SUB-CHAMBER TYPE GAS ENGINE |
Inventors:
Yuki Koshiba
Kazuo Ogura
Kazuo Ogura
Application Number:
JP2015012345A
Publication Date:
March 06, 2019
Filing Date:
January 26, 2015
Export Citation:
Assignee:
Mitsubishi Heavy Industries Engine & Turbocharger Co., Ltd.
International Classes:
F02M21/02; F02B19/00; F02B43/00; F02D41/02; F02D41/04; F02D41/14; F02D43/00; F02D45/00
Domestic Patent References:
| JP2014185574A | ||||
| JP2010261369A | ||||
| JP2008002270A | ||||
| JP2005240712A | ||||
| JP8232664A | ||||
| JP2001116328A |
Attorney, Agent or Firm:
Noriharu Fujita
Miori Takao
Kawakami Miki
Miori Takao
Kawakami Miki