Title:
DIESEL ENGINE
Document Type and Number:
WIPO Patent Application WO/2023/105860
Kind Code:
A1
Abstract:
[Problem] To provide a diesel engine which makes it possible to simultaneously reduce NOx and PM. [Solution] A diesel engine 1 comprises an injector 15 for injecting fuel into an auxiliary combustion chamber 13 and is provided so as to face the auxiliary combustion chamber 13, a control device for controlling the injection period of the fuel 81 injected by the injector 15, and an exhaust recirculation means for recirculating the engine exhaust. The control device executes control which involves: controlling the injection period of a main injection and a pre-injection which is performed before the main injection; generating a pre-mixed gas which is lean and homogeneous from the fuel 81 injected by the pre-injection and air AR in the auxiliary combustion chamber 13 by maintaining a pre-injection premixing period, which extends from the start of pre-injection until ignition of the mixed gas comprising the the fuel 81 injected by the pre-injection and the air AR occurs; and maintaining a main-injection premixing period, which extends from the start of the main injection until ignition of the the mixed gas comprising the fuel 81 injected in the main injection and the air AR occurs.
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Inventors:
KOBAYASHI YASUSHI (JP)
NAGAI NAOTARO (JP)
KANEKO RINA (JP)
TENNOMI MASANARI (JP)
MATSUO NARUHIRO (JP)
NAGAI NAOTARO (JP)
KANEKO RINA (JP)
TENNOMI MASANARI (JP)
MATSUO NARUHIRO (JP)
Application Number:
PCT/JP2022/032402
Publication Date:
June 15, 2023
Filing Date:
August 29, 2022
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
F02B19/14; F02D41/40; F02D45/00
Foreign References:
| JPH03115724A | 1991-05-16 | |||
| JPS61112725A | 1986-05-30 | |||
| JP2005069042A | 2005-03-17 |
Attorney, Agent or Firm:
YOSHINO, Michiyuki (JP)
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