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JPH06330758A Expired / Lapsed JP ⏱️ 0.0 years remaining

Intake system of engine

Assignee: Mazda Motor Corp
•
Filing: 1993-05-24
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Granted: —
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Expires: 2013-05-24
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 低回転時には混合気を十分に成層化してその 着火性・燃焼性を有効に高めることができ、高回転時に は吸気充填効率を十分に高めることができるエンジンの 吸気装置を提供する。 【構成】 エンジンCEにおいて、低回転時にはVIC S弁37が閉じられ、混合気供給ポート7から燃焼室2 内へ混合気が供給され、該混合気が点火プラグ8の周囲 に集中して燃焼室2内が成層化され、混合気の着火性・ 燃焼性が高められる。ここで、エアポンプ33から混合 気供給ポート7に供給される加圧エアの脈動が拡大室3 2によって減衰させられ、混合気供給ポート7から燃焼 室2への混合気の流入量(流速)の変動が低減され、成層 化が安定化される。高回転時には、VICS弁37が開 かれ、第2吸気ポート4側で拡大室32を圧力反転部と する慣性過給が行われ、充填効率が高められる。 (57) [Summary] [Purpose] The intake air of an engine that can sufficiently stratify the air-fuel mixture at low rotation speed to effectively enhance its ignitability and combustibility, and sufficiently increase the intake charging efficiency at high rotation speed. Provide a device. [Structure] In the engine CE, VIC at low speed The S valve 37 is closed, and the mixture supply port 7 is connected to the combustion chamber 2 The air-fuel mixture is supplied to the inside, and the air-fuel mixture is concentrated around the ignition plug 8 to stratify the inside of the combustion chamber 2 to ignite the air-fuel mixture. Combustibility is enhanced. Here, the pulsation of the pressurized air supplied from the air pump 33 to the air-fuel mixture supply port 7 is increased by the expansion chamber 3 2, the fluctuation of the inflow amount (flow velocity) of the air-fuel mixture from the air-fuel mixture supply port 7 to the combustion chamber 2 is reduced, and the stratification is stabilized. At the time of high rotation, the VICS valve 37 is opened, and inertial supercharging is performed on the side of the second intake port 4 using the expansion chamber 32 as a pressure reversal portion, so that the charging efficiency is improved.

Inventors

  • 👤 Yoshihisa Nosei
  • 👤 芳尚 乃生
  • 👤 Toshihide Yamamoto
  • 👤 寿英 山本
  • 👤 Tsugio Hatsuhira
  • 👤 次男 服平
  • 👤 Keiji Araki
  • 👤 啓二 荒木

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-10-23 04:06
CPC Classifications
Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12

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