SlideShare a Scribd company logo
1 of 8
Experiments - Injection pressure
effects on gasoline compression
ignition combustion
Kyeonghun Jwa
2020_03_08
Experiments Condition
-1500RPM, 4.0bar
Speed [rpm] 1500
IMEPn [bar] 4.0
Intake Pressure [kPa] 125
Exhaust Pressure [kPa] 145
Intake Temperature [℃] 80
EGR [%] 0
Intake O2 [%] 21
Split Ratio [-] 65/35
Fuel mass/cycle [mg] 10.1-12.5
Fuel: AKI87 (LHV: 43790kg/kg) added Infineum R655
Cylinders 1
Bore [mm] 83
Stroke [mm] 90.4
Displacement [L] 0.4774
Compression ratio 16
Intake Valve Opening[°aTDC] 344
Intake Valve Closing[°aTDC] -132
Exhaust Valve Opening[°aTDC] 112
Exhaust Valve Closing[°aTDC] 388
Design Common
Rail
Injector Bosch
CRIP2
Nozzle Included Cone Angle[°] 155
Nozzle Hole Diameter [mm] 0.141
Number of Nozzle Holes 7
Rail Pressure[bar] 400-1000
• 실험 조건의 경우 코리의 실험조건과 비슷하게 하려고 했지만, IMEP를
5bar이상 올릴 경우 PRR(Pressure Rise Rate)이 허용 범위를 넘어서 4bar로
설정함.
• GCI 실험시 특히나 Intake Temperature의 온도에 민감하게 반응했었음.
• EGR을 이용해도 실험을 하려고 했으나, EGR %에 따른 stability가 확보가 안되고
시간이 오래 걸려서, 시간이 촉박해 실험은 하지 못함.
Results - 1500RPM, SOCI1(-350°) & SOCI2
• 인젝션은 2번에 걸쳐서 분사했으며, early injection인 350°에서 연료 분사량의 65%를 분사하고 나머지
SOCI2에서 나머지 35%를 분사하도록 컨트롤러에서 조절하였음.
• 피규어에 표시된 범주는 SOCI2의 타이밍이며, 인젝션 프레셔에 따른 Nox분출량을 모든 조건에서 동일하게 하기
위해 실험을 진행함.
Results - 1500RPM, SOCI1(-350°) & SOCI2
• Heat Release Rate 계산결과
Results - 1500RPM, SOCI1(-350°) & SOCI2
• 추 후 CVCC에서 실험에서 엔진 실험과 동일한 실험조건을 가질 수 있도록 엔진더
실린더 내 온도를 계산함. (결과 엑셀표 따로 첨부하였습니다.)
Results - 1500RPM, SOCI1(-350°) & SOCI2
To get similar EINOx results(≈ 0.5),
Injection Pressure 400 500 600 700 800 900
SOCI2(°aTDC) -43 -42 -41 -40 -40 -38
• 그림의 경우 SOCI2 에 따른 EINOx 결과를 표시한 것이며, 표는 각 분사압력에서
비슷한 Nox emission량을 갖는 분사타이밍을 정리한 것임.
Results - 1500RPM, SOCI1(-350°) & SOCI2
• 그 외 다른 에미션 결과를 표시하였으며, GCI의 경우 특히나 HC이 많이 나와서, 실험
중에 미연소 연료의 냄새를 느낄 정도로 많은 양의 emission이 나온 것으로 생각됨.
CVCC Experimental Conditions
@ Injection Pressure 400 500 600 700 800 900
SOCI2(°aTDC) -43 -42 -41 -40 -40 -38
Injection
Pressure
400 500 600 700 800 900
P@SOCI2 [kPa] 1005.8 1047.8 1094.3 1136.6 1138.0 1241.7
T@SOCI2 [°C] 621.8 628.6 633.7 632.2 633.8 652.4
• 분사 압력에 따른 분사타이밍을 delay할 때, 비슷한 Nox 결과를 얻을 수
있었는데, 코리가 이것에 이유를 스프레이 모델에 대한 CFD 연구를 시행
• 이것을 실험적으로 비교하고자 할때, 필요한 분사 타이밍에서의 실린더 내
압력 및 온도를 표로 정리하였음.

More Related Content

Featured

2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by Hubspot2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by HubspotMarius Sescu
 
Everything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPTEverything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPTExpeed Software
 
Product Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage EngineeringsProduct Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
 
How Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental HealthHow Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
 
AI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdfAI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
 
PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024Neil Kimberley
 
Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)contently
 
How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024Albert Qian
 
Social Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsSocial Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsKurio // The Social Media Age(ncy)
 
Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
 
5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summary5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summarySpeakerHub
 
ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
 
Getting into the tech field. what next
Getting into the tech field. what next Getting into the tech field. what next
Getting into the tech field. what next Tessa Mero
 
Google's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentGoogle's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentLily Ray
 
Time Management & Productivity - Best Practices
Time Management & Productivity -  Best PracticesTime Management & Productivity -  Best Practices
Time Management & Productivity - Best PracticesVit Horky
 
The six step guide to practical project management
The six step guide to practical project managementThe six step guide to practical project management
The six step guide to practical project managementMindGenius
 
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...RachelPearson36
 

Featured (20)

2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by Hubspot2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by Hubspot
 
Everything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPTEverything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPT
 
Product Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage EngineeringsProduct Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage Engineerings
 
How Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental HealthHow Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental Health
 
AI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdfAI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdf
 
Skeleton Culture Code
Skeleton Culture CodeSkeleton Culture Code
Skeleton Culture Code
 
PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024
 
Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)
 
How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024
 
Social Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsSocial Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie Insights
 
Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024
 
5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summary5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summary
 
ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd
 
Getting into the tech field. what next
Getting into the tech field. what next Getting into the tech field. what next
Getting into the tech field. what next
 
Google's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentGoogle's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search Intent
 
How to have difficult conversations
How to have difficult conversations How to have difficult conversations
How to have difficult conversations
 
Introduction to Data Science
Introduction to Data ScienceIntroduction to Data Science
Introduction to Data Science
 
Time Management & Productivity - Best Practices
Time Management & Productivity -  Best PracticesTime Management & Productivity -  Best Practices
Time Management & Productivity - Best Practices
 
The six step guide to practical project management
The six step guide to practical project managementThe six step guide to practical project management
The six step guide to practical project management
 
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
 

Experiments - Injection pressure effects on gasoline compression_rev01_20200309.pptx

  • 1. Experiments - Injection pressure effects on gasoline compression ignition combustion Kyeonghun Jwa 2020_03_08
  • 2. Experiments Condition -1500RPM, 4.0bar Speed [rpm] 1500 IMEPn [bar] 4.0 Intake Pressure [kPa] 125 Exhaust Pressure [kPa] 145 Intake Temperature [℃] 80 EGR [%] 0 Intake O2 [%] 21 Split Ratio [-] 65/35 Fuel mass/cycle [mg] 10.1-12.5 Fuel: AKI87 (LHV: 43790kg/kg) added Infineum R655 Cylinders 1 Bore [mm] 83 Stroke [mm] 90.4 Displacement [L] 0.4774 Compression ratio 16 Intake Valve Opening[°aTDC] 344 Intake Valve Closing[°aTDC] -132 Exhaust Valve Opening[°aTDC] 112 Exhaust Valve Closing[°aTDC] 388 Design Common Rail Injector Bosch CRIP2 Nozzle Included Cone Angle[°] 155 Nozzle Hole Diameter [mm] 0.141 Number of Nozzle Holes 7 Rail Pressure[bar] 400-1000 • 실험 조건의 경우 코리의 실험조건과 비슷하게 하려고 했지만, IMEP를 5bar이상 올릴 경우 PRR(Pressure Rise Rate)이 허용 범위를 넘어서 4bar로 설정함. • GCI 실험시 특히나 Intake Temperature의 온도에 민감하게 반응했었음. • EGR을 이용해도 실험을 하려고 했으나, EGR %에 따른 stability가 확보가 안되고 시간이 오래 걸려서, 시간이 촉박해 실험은 하지 못함.
  • 3. Results - 1500RPM, SOCI1(-350°) & SOCI2 • 인젝션은 2번에 걸쳐서 분사했으며, early injection인 350°에서 연료 분사량의 65%를 분사하고 나머지 SOCI2에서 나머지 35%를 분사하도록 컨트롤러에서 조절하였음. • 피규어에 표시된 범주는 SOCI2의 타이밍이며, 인젝션 프레셔에 따른 Nox분출량을 모든 조건에서 동일하게 하기 위해 실험을 진행함.
  • 4. Results - 1500RPM, SOCI1(-350°) & SOCI2 • Heat Release Rate 계산결과
  • 5. Results - 1500RPM, SOCI1(-350°) & SOCI2 • 추 후 CVCC에서 실험에서 엔진 실험과 동일한 실험조건을 가질 수 있도록 엔진더 실린더 내 온도를 계산함. (결과 엑셀표 따로 첨부하였습니다.)
  • 6. Results - 1500RPM, SOCI1(-350°) & SOCI2 To get similar EINOx results(≈ 0.5), Injection Pressure 400 500 600 700 800 900 SOCI2(°aTDC) -43 -42 -41 -40 -40 -38 • 그림의 경우 SOCI2 에 따른 EINOx 결과를 표시한 것이며, 표는 각 분사압력에서 비슷한 Nox emission량을 갖는 분사타이밍을 정리한 것임.
  • 7. Results - 1500RPM, SOCI1(-350°) & SOCI2 • 그 외 다른 에미션 결과를 표시하였으며, GCI의 경우 특히나 HC이 많이 나와서, 실험 중에 미연소 연료의 냄새를 느낄 정도로 많은 양의 emission이 나온 것으로 생각됨.
  • 8. CVCC Experimental Conditions @ Injection Pressure 400 500 600 700 800 900 SOCI2(°aTDC) -43 -42 -41 -40 -40 -38 Injection Pressure 400 500 600 700 800 900 P@SOCI2 [kPa] 1005.8 1047.8 1094.3 1136.6 1138.0 1241.7 T@SOCI2 [°C] 621.8 628.6 633.7 632.2 633.8 652.4 • 분사 압력에 따른 분사타이밍을 delay할 때, 비슷한 Nox 결과를 얻을 수 있었는데, 코리가 이것에 이유를 스프레이 모델에 대한 CFD 연구를 시행 • 이것을 실험적으로 비교하고자 할때, 필요한 분사 타이밍에서의 실린더 내 압력 및 온도를 표로 정리하였음.