A study on supercharged HCCI natural gas engines

Takahiro Sako, Satoshi S. Morimoto, Hiroumi Fujimoto, Ryoji Okada, Norimasa Iida

研究成果: Conference contribution

5 引用 (Scopus)

抄録

The possibility of turbocharging into a natural gas homogeneous charge compression ignition (HCCI) engine is investigated experimentally and by simulation. Experiments are performed using a four-cylinder naturally aspirated engine fitted with an external supercharger and a butterfly valve for back pressure control to simulate a turbocharger with efficiency of 0.64. Based on the test results, the performance and emission characteristics are studied in detail through numerical one-dimensional cycle simulations. The results indicate that the thermal efficiency can be improved by raising the engine compression ratio and lowering the turbocharging pressure. At an engine compression ratio of 21 and turbocharging pressure of 1.9 bar, the brake thermal efficiency reaches 0.43, with NOx emissions of only 10 ppm or less. The cycle simulations demonstrate that performance comparable to that achieved in the external supercharging test can be obtained by optimizing engine and turbocharger specifications.

元の言語English
ホスト出版物のタイトルSAE Technical Papers
出版物ステータスPublished - 2005

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Gas engines
Ignition
Natural gas
Engines
Compression ratio (machinery)
Superchargers
Pressure control
Engine cylinders
Brakes
Specifications
Experiments

ASJC Scopus subject areas

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

これを引用

Sako, T., Morimoto, S. S., Fujimoto, H., Okada, R., & Iida, N. (2005). A study on supercharged HCCI natural gas engines. : SAE Technical Papers

A study on supercharged HCCI natural gas engines. / Sako, Takahiro; Morimoto, Satoshi S.; Fujimoto, Hiroumi; Okada, Ryoji; Iida, Norimasa.

SAE Technical Papers. 2005.

研究成果: Conference contribution

Sako, T, Morimoto, SS, Fujimoto, H, Okada, R & Iida, N 2005, A study on supercharged HCCI natural gas engines. : SAE Technical Papers.
Sako T, Morimoto SS, Fujimoto H, Okada R, Iida N. A study on supercharged HCCI natural gas engines. : SAE Technical Papers. 2005
Sako, Takahiro ; Morimoto, Satoshi S. ; Fujimoto, Hiroumi ; Okada, Ryoji ; Iida, Norimasa. / A study on supercharged HCCI natural gas engines. SAE Technical Papers. 2005.
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title = "A study on supercharged HCCI natural gas engines",
abstract = "The possibility of turbocharging into a natural gas homogeneous charge compression ignition (HCCI) engine is investigated experimentally and by simulation. Experiments are performed using a four-cylinder naturally aspirated engine fitted with an external supercharger and a butterfly valve for back pressure control to simulate a turbocharger with efficiency of 0.64. Based on the test results, the performance and emission characteristics are studied in detail through numerical one-dimensional cycle simulations. The results indicate that the thermal efficiency can be improved by raising the engine compression ratio and lowering the turbocharging pressure. At an engine compression ratio of 21 and turbocharging pressure of 1.9 bar, the brake thermal efficiency reaches 0.43, with NOx emissions of only 10 ppm or less. The cycle simulations demonstrate that performance comparable to that achieved in the external supercharging test can be obtained by optimizing engine and turbocharger specifications.",
keywords = "Gaseous Fuel, HCCI, Internal Combustion Engine, Natural Gas, Premixed Combustion, Turbocharger",
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AU - Sako, Takahiro

AU - Morimoto, Satoshi S.

AU - Fujimoto, Hiroumi

AU - Okada, Ryoji

AU - Iida, Norimasa

PY - 2005

Y1 - 2005

N2 - The possibility of turbocharging into a natural gas homogeneous charge compression ignition (HCCI) engine is investigated experimentally and by simulation. Experiments are performed using a four-cylinder naturally aspirated engine fitted with an external supercharger and a butterfly valve for back pressure control to simulate a turbocharger with efficiency of 0.64. Based on the test results, the performance and emission characteristics are studied in detail through numerical one-dimensional cycle simulations. The results indicate that the thermal efficiency can be improved by raising the engine compression ratio and lowering the turbocharging pressure. At an engine compression ratio of 21 and turbocharging pressure of 1.9 bar, the brake thermal efficiency reaches 0.43, with NOx emissions of only 10 ppm or less. The cycle simulations demonstrate that performance comparable to that achieved in the external supercharging test can be obtained by optimizing engine and turbocharger specifications.

AB - The possibility of turbocharging into a natural gas homogeneous charge compression ignition (HCCI) engine is investigated experimentally and by simulation. Experiments are performed using a four-cylinder naturally aspirated engine fitted with an external supercharger and a butterfly valve for back pressure control to simulate a turbocharger with efficiency of 0.64. Based on the test results, the performance and emission characteristics are studied in detail through numerical one-dimensional cycle simulations. The results indicate that the thermal efficiency can be improved by raising the engine compression ratio and lowering the turbocharging pressure. At an engine compression ratio of 21 and turbocharging pressure of 1.9 bar, the brake thermal efficiency reaches 0.43, with NOx emissions of only 10 ppm or less. The cycle simulations demonstrate that performance comparable to that achieved in the external supercharging test can be obtained by optimizing engine and turbocharger specifications.

KW - Gaseous Fuel

KW - HCCI

KW - Internal Combustion Engine

KW - Natural Gas

KW - Premixed Combustion

KW - Turbocharger

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