A Study of a DISI Engine with a Centrally Located High-pressure Fuel Injector

Hiraya, Koji; Hotta, Isamu; Takahashi, Eiji; Tsuchida, Hirofumi; Urushihara, Tomonori

doi:10.4271/2004-01-2944

Cited by 14 publications

(4 citation statements)

References 6 publications

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“…The fuel injector specifications are taken from the Hiraya et al, [18]. This injector has ten holes on the periphery of it, which are placed at an angular position of 36 .…”

Section: Fuel Injectormentioning

confidence: 99%

“…The TKE is also calculated based data at these locations by, Table 2 The specifications of multi-hole injector [18]. …”

Section: Calculation Of Tr and Tkementioning

confidence: 99%

“…They observed that impingement of fuel on liner and piston walls had to be avoided as much as possible, so that fuel rich zones which promoted soot could be avoided. Hiraya et al [18], developed high pressure injectors for better atomization to enhance air-fuel mixing and better charge stratification. The main motivation behind this study is to evaluate the sensitiveness of the geometrical parameters on the variation of the in-cylinder flow and the air fuel interaction in a DISI engine.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of piston shape on in-cylinder flows and air–fuel interaction in a direct injection spark ignition engine – A CFD analysis

Harshavardhan

Mallikarjuna

2015

Energy

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“…The fuel injector specifications are taken from the Hiraya et al, [18]. This injector has ten holes on the periphery of it, which are placed at an angular position of 36 .…”

Section: Fuel Injectormentioning

confidence: 99%

“…The TKE is also calculated based data at these locations by, Table 2 The specifications of multi-hole injector [18]. …”

Section: Calculation Of Tr and Tkementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of piston shape on in-cylinder flows and air–fuel interaction in a direct injection spark ignition engine – A CFD analysis

Harshavardhan

Mallikarjuna

2015

Energy

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“…In fact, up to 20 MPa are currently serial produced . Recent studies have reported that an increase in the injection pressure above 50 MPa should further improve both efficiency and performance due to the reduction on the fuel droplet size . Nevertheless, the high pressures, in combination with the poor lubricity of gasoline, provoke the failure of the metallic sliding components through adhesion and scuffing mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Tribological Performance of Aligned Silicon Nitride Ceramics under Isooctane‐Lubricated Oscillating Sliding Conditions

et al. 2015

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Silicon nitride (Si3N4) materials with preferentially aligned β‐Si3N4 grains were tribologically characterized with respect to their possible application in a high‐pressure gasoline pump. Tribological tests were performed under oscillating sliding conditions lubricated with isooctane as a substitute for gasoline using Si3N4 counterbodies. Performance in terms of wear of the aligned materials surpassed that of nonaligned reference Si3N4, as well as that of self‐mated silicon carbide, zirconia, alumina, and a steel sliding pair. The plane perpendicular to the extruding direction and parallel to the hot‐pressing axis was the most wear resistant.

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A study of mixture formation processes in direct injection stratified charge gasoline engines by quantitative laser-induced fluorescence imaging and the infrared absorption method

Itoh

Kakuho

Hiraya

et al. 2006

International Journal of Engine Research

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Mixture formation processes were investigated of three types of direct injection stratified charge gasoline engine based on wall-guided, air-guided, and spray-guided concepts. Temporal and spatial variations of fuel concentration in the combustion chamber were measured by laser diagnostics such as quantitative laser-induced fluorescence (LIF) imaging and infrared absorption methods on a single-cylinder optical engine. It was found from the experiments that the direct injection gasoline engines based on both the wall-guided and air-guided concepts have long time intervals between the end of injection timing and ignition timing, and this demands early injection and ignition timings in the compression stroke, resulting in lower thermal efficiencies than those of the spray-guided concept. As for the spray-guided concept, fuel is ignited immediately after the end of injection, which enables near TDC (top dead centre) combustion, allowing lower fuel consumption than the other two. However, the condition for stable ignition and combustion achieved with the spray-guided concept is very narrow in terms of injection and ignition timings, so it is essential to widen the condition in order to make the concept a reality.

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A Study of a DISI Engine with a Centrally Located High-pressure Fuel Injector

Cited by 14 publications

References 6 publications

Effect of piston shape on in-cylinder flows and air–fuel interaction in a direct injection spark ignition engine – A CFD analysis

Effect of piston shape on in-cylinder flows and air–fuel interaction in a direct injection spark ignition engine – A CFD analysis

Tribological Performance of Aligned Silicon Nitride Ceramics under Isooctane‐Lubricated Oscillating Sliding Conditions

A study of mixture formation processes in direct injection stratified charge gasoline engines by quantitative laser-induced fluorescence imaging and the infrared absorption method

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