To achieve both suppression of knocking and reduction in exhaust loss according to engine rotation speed.SOLUTION: An engine system 12 comprises: a rotary engine 14 having a rotor housing 16, side housings 18, a rotor 20 that is housed in a rotor accommodation chamber surrounded by the rotor housing and the side housings and forms three working chambers 24, and an intake passage 32 for leading air into the working chamber; an EGR passage 46 for recirculating exhaust gas of the rotary engine to the intake passage; an EGR valve 50 for adjusting the amount of exhaust gas recirculated to the intake passage; an eccentric shaft angle sensor 58 for detecting the engine rotation speed; and an ECM 70 that is configured to control the opening degree of the EGR valve. In the case where an engine load is the same, when the engine rotation speed is relatively low, the ECM 70 controls the EGR valve such that the EGR rate of intake air introduced into the working chamber becomes high as compared with that when the engine rotation speed is relatively high.SELECTED DRAWING: Figure 17

    【課題】エンジン回転数に応じてノッキング抑制と排気損失低減との両立を図る。【解決手段】エンジンシステム12は、ロータハウジング16と、サイドハウジング18と、これらのロータハウジング及びサイドハウジングに囲まれたロータ収容室に収容され、3つの作動室24を形成するロータ20と、作動室に空気を導く吸気通路32と、を有するロータリエンジン14と、ロータリエンジンの排気ガスを吸気通路に還流するEGR通路46と、吸気通路に還流される排気ガスの量を調整するEGRバルブ50と、エンジン回転数を検出するエキセントリックシャフト角センサ58と、EGRバルブの開度を制御するように構成されたECM70とを備え、ECM70は、エンジン負荷が同一の場合において、エンジン回転数が相対的に低いときには、エンジン回転数が相対的に高いときに比べて、作動室に導入される吸気のEGR率が高くなるように、EGRバルブを制御する。【選択図】図17


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    Title :

    ENGINE SYSTEM AND SERIES HYBRID VEHICLE


    Additional title:

    エンジンシステム及びシリーズハイブリッド車両


    Contributors:

    Publication date :

    2023-12-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen



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