Title:
予燃焼室および２つのスパークプラグを有するガソリン内燃エンジン
Document Type and Number:
Japanese Patent JP6699050
Kind Code:
B2
Abstract:
A gasoline internal combustion engine has, for each cylinder (2), a combustion chamber (4) and a combustion pre-chamber (13) communicating with the combustion chamber (4). A first spark plug (11) is associated with the combustion pre-chamber, while a second spark plug (15) is associated with the combustion chamber (4). Gasoline is injected by means of an injector device (16) directly associated with the combustion chamber (4) and/or by means of an injector device (17) arranged for injecting gasoline into an intake duct (5) associated with the cylinder. No device for injecting gasoline or air or a mixture of air and gasoline directly into the combustion pre-chamber is associated with the combustion pre-chamber, The engine operates with an air/gasoline mixture essentially corresponding to a stoichiometric dose, so as to be compatible with an exhaust gas treatment system comprising a conventional trivalent catalyst. The combustion pre-chamber is, therefore, not used to be able to operate with poor dosing, but to increase the resistance to detonation of the engine. In this way, the engine can be configured with a high compression ratio, with the advantage of a significant reduction in fuel consumption at the same power level. The spark plug (15) directly associated with the combustion chamber (4) is only activated at low and medium engine loads, to stabilize combustion, and is inactive at higher loads.
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Inventors:
Bedoni Fabio
Magistrali stefano
Mazzoni David
Mus Ettre
Pivetti Gianluca
Zorsi Paolo
Magistrali stefano
Mazzoni David
Mus Ettre
Pivetti Gianluca
Zorsi Paolo
Application Number:
JP2018135269A
Publication Date:
May 27, 2020
Filing Date:
July 18, 2018
Export Citation:
Assignee:
MASERATI S.P.A.
International Classes:
F02B19/12; F02B19/10; F02B23/08; F02F1/24; H01T13/39
Domestic Patent References:
| JP52125908A | ||||
| JP2006503216A | ||||
| JP2007192204A | ||||
| JP2007255370A | ||||
| JP2012193749A | ||||
| JP55029059A | ||||
| JP8284665A | ||||
| JP2013033713A |
Attorney, Agent or Firm:
Longhua International Patent Service Corporation