Computations and Experiments of Single-Point Autoignition Gasoline Engine with Colliding Pulsed Supermulti-Jets, Single Piston and Rotary Valve

Kan Yamagishi, Yuichi Onuma, Soichi Ohara, Kenya Hasegawa, Kentaro Kojima, Tomoya Shirai, Takahiro Kihara, Kota Tsuru, Ken Naitoh

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    A new engine concept (Fugine) based on colliding pulsed supermulti-jets was proposed in recent years, which is expected to provide high thermal efficiencies over 50% and less combustion noise. Theoretical analyses indicate a high potential for thermal efficiency over 60%. Three types of prototype engines have been developed. The first prototype engine based only on the colliding of pulsed supermulti-jets with fourteen nozzles has no piston compression, while the second type equipped with a low-cost gasoline injector in the suction port has a double piston system and eight jet nozzles. Combustion experiments conducted on the second prototype gasoline engine show high thermal efficiency similar to that of traditional diesel engines and lower combustion noise comparable to that of traditional spark-ignition gasoline engines. This paper presents the third prototype engine: a single-piston engine having a rotary valve, which induces strong point compression produced by twenty-four pulsed multi-jets injected from suction nozzles. Negative pressure generated by expansion due to piston motion under a closed rotary valve condition results in strong jets going to the cylinder center. This third engine has no compression due to piston motion. Unsteady three-dimensional computations for this engine including spray calculations of liquid gasoline, subsonic and supersonic turbulent flows, and combustion phenomena show the potential for very high combustion efficiency over 95%. Based on the result, combustion experiments of the engine were started. The colliding of the pulsed supermulti-jets causes combustion to occur.

    Original languageEnglish
    JournalSAE Technical Papers
    Volume2016-Octobeer
    DOIs
    Publication statusPublished - 2016

    Fingerprint

    Pistons
    Gasoline
    Engines
    Experiments
    Nozzles
    Acoustic noise
    Engine pistons
    Engine cylinders
    Electric sparks
    Turbulent flow
    Ignition
    Diesel engines
    Liquids
    Hot Temperature
    Costs

    ASJC Scopus subject areas

    • Automotive Engineering
    • Safety, Risk, Reliability and Quality
    • Pollution
    • Industrial and Manufacturing Engineering

    Cite this

    Computations and Experiments of Single-Point Autoignition Gasoline Engine with Colliding Pulsed Supermulti-Jets, Single Piston and Rotary Valve. / Yamagishi, Kan; Onuma, Yuichi; Ohara, Soichi; Hasegawa, Kenya; Kojima, Kentaro; Shirai, Tomoya; Kihara, Takahiro; Tsuru, Kota; Naitoh, Ken.

    In: SAE Technical Papers, Vol. 2016-Octobeer, 2016.

    Research output: Contribution to journalArticle

    Yamagishi, Kan ; Onuma, Yuichi ; Ohara, Soichi ; Hasegawa, Kenya ; Kojima, Kentaro ; Shirai, Tomoya ; Kihara, Takahiro ; Tsuru, Kota ; Naitoh, Ken. / Computations and Experiments of Single-Point Autoignition Gasoline Engine with Colliding Pulsed Supermulti-Jets, Single Piston and Rotary Valve. In: SAE Technical Papers. 2016 ; Vol. 2016-Octobeer.
    @article{34fd65ae681a4f21806e86c9bd18d755,
    title = "Computations and Experiments of Single-Point Autoignition Gasoline Engine with Colliding Pulsed Supermulti-Jets, Single Piston and Rotary Valve",
    abstract = "A new engine concept (Fugine) based on colliding pulsed supermulti-jets was proposed in recent years, which is expected to provide high thermal efficiencies over 50{\%} and less combustion noise. Theoretical analyses indicate a high potential for thermal efficiency over 60{\%}. Three types of prototype engines have been developed. The first prototype engine based only on the colliding of pulsed supermulti-jets with fourteen nozzles has no piston compression, while the second type equipped with a low-cost gasoline injector in the suction port has a double piston system and eight jet nozzles. Combustion experiments conducted on the second prototype gasoline engine show high thermal efficiency similar to that of traditional diesel engines and lower combustion noise comparable to that of traditional spark-ignition gasoline engines. This paper presents the third prototype engine: a single-piston engine having a rotary valve, which induces strong point compression produced by twenty-four pulsed multi-jets injected from suction nozzles. Negative pressure generated by expansion due to piston motion under a closed rotary valve condition results in strong jets going to the cylinder center. This third engine has no compression due to piston motion. Unsteady three-dimensional computations for this engine including spray calculations of liquid gasoline, subsonic and supersonic turbulent flows, and combustion phenomena show the potential for very high combustion efficiency over 95{\%}. Based on the result, combustion experiments of the engine were started. The colliding of the pulsed supermulti-jets causes combustion to occur.",
    author = "Kan Yamagishi and Yuichi Onuma and Soichi Ohara and Kenya Hasegawa and Kentaro Kojima and Tomoya Shirai and Takahiro Kihara and Kota Tsuru and Ken Naitoh",
    year = "2016",
    doi = "10.4271/2016-01-2334",
    language = "English",
    volume = "2016-Octobeer",
    journal = "SAE Technical Papers",
    issn = "0148-7191",
    publisher = "SAE International",

    }

    TY - JOUR

    T1 - Computations and Experiments of Single-Point Autoignition Gasoline Engine with Colliding Pulsed Supermulti-Jets, Single Piston and Rotary Valve

    AU - Yamagishi, Kan

    AU - Onuma, Yuichi

    AU - Ohara, Soichi

    AU - Hasegawa, Kenya

    AU - Kojima, Kentaro

    AU - Shirai, Tomoya

    AU - Kihara, Takahiro

    AU - Tsuru, Kota

    AU - Naitoh, Ken

    PY - 2016

    Y1 - 2016

    N2 - A new engine concept (Fugine) based on colliding pulsed supermulti-jets was proposed in recent years, which is expected to provide high thermal efficiencies over 50% and less combustion noise. Theoretical analyses indicate a high potential for thermal efficiency over 60%. Three types of prototype engines have been developed. The first prototype engine based only on the colliding of pulsed supermulti-jets with fourteen nozzles has no piston compression, while the second type equipped with a low-cost gasoline injector in the suction port has a double piston system and eight jet nozzles. Combustion experiments conducted on the second prototype gasoline engine show high thermal efficiency similar to that of traditional diesel engines and lower combustion noise comparable to that of traditional spark-ignition gasoline engines. This paper presents the third prototype engine: a single-piston engine having a rotary valve, which induces strong point compression produced by twenty-four pulsed multi-jets injected from suction nozzles. Negative pressure generated by expansion due to piston motion under a closed rotary valve condition results in strong jets going to the cylinder center. This third engine has no compression due to piston motion. Unsteady three-dimensional computations for this engine including spray calculations of liquid gasoline, subsonic and supersonic turbulent flows, and combustion phenomena show the potential for very high combustion efficiency over 95%. Based on the result, combustion experiments of the engine were started. The colliding of the pulsed supermulti-jets causes combustion to occur.

    AB - A new engine concept (Fugine) based on colliding pulsed supermulti-jets was proposed in recent years, which is expected to provide high thermal efficiencies over 50% and less combustion noise. Theoretical analyses indicate a high potential for thermal efficiency over 60%. Three types of prototype engines have been developed. The first prototype engine based only on the colliding of pulsed supermulti-jets with fourteen nozzles has no piston compression, while the second type equipped with a low-cost gasoline injector in the suction port has a double piston system and eight jet nozzles. Combustion experiments conducted on the second prototype gasoline engine show high thermal efficiency similar to that of traditional diesel engines and lower combustion noise comparable to that of traditional spark-ignition gasoline engines. This paper presents the third prototype engine: a single-piston engine having a rotary valve, which induces strong point compression produced by twenty-four pulsed multi-jets injected from suction nozzles. Negative pressure generated by expansion due to piston motion under a closed rotary valve condition results in strong jets going to the cylinder center. This third engine has no compression due to piston motion. Unsteady three-dimensional computations for this engine including spray calculations of liquid gasoline, subsonic and supersonic turbulent flows, and combustion phenomena show the potential for very high combustion efficiency over 95%. Based on the result, combustion experiments of the engine were started. The colliding of the pulsed supermulti-jets causes combustion to occur.

    UR - http://www.scopus.com/inward/record.url?scp=85018388217&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=85018388217&partnerID=8YFLogxK

    U2 - 10.4271/2016-01-2334

    DO - 10.4271/2016-01-2334

    M3 - Article

    AN - SCOPUS:85018388217

    VL - 2016-Octobeer

    JO - SAE Technical Papers

    JF - SAE Technical Papers

    SN - 0148-7191

    ER -