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Journals / International Journal of Automotive Science and Technology / 2026 / Volume: 6 Issue: 1

Experimental Investigations on Enhancement of DME Energy Shares in Compression-Ignition Engine Under Dual Fuel Mode Using Reduced Compression Ratio

Shreemohan Sinha(Department of Science and Technology, New Delhi, India)0000-0002-2798-464X
Anilkumar Shere(Indian Institute of Technology Delhi)0000-0002-9791-8066
K. A. Subramanian(Indian Institute of Technology Delhi)0000-0003-2610-9680
Pages
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Publication Date
2022-03-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The combustion characteristics are discussed in detail.

📌 3 Key Takeaways

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Objective & Hypothesis:The effects of the compression ratio (CR), which was reduced from base (19:1) to (17:1), on the enhancement of Dimethyl Ether Energy Share (DME ES) and emissions reduction in a 5.5 kW DICI (direct injection compression ignition) engine are studied.
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Key Findings & Data:The experimental tests were conducted on the engine with DME as main fuel and diesel as pilot fuel at 13 Nm torque and speed of 2200 rpm condition under dual fuel mode (DME-diesel).
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Conclusion & Impact:The combustion characteristics are discussed in detail.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Compression ratio · Emissions · Diesel Engine

Abstract

The effects of the compression ratio (CR), which was reduced from base (19:1) to (17:1), on the enhancement of Dimethyl Ether Energy Share (DME ES) and emissions reduction in a 5.5 kW DICI (direct injection compression ignition) engine are studied. The experimental tests were conducted on the engine with DME as main fuel and diesel as pilot fuel at 13 Nm torque and speed of 2200 rpm condition under dual fuel mode (DME-diesel). The maximum DME energy share (DME ES) enhanced drastically from 44% with base CR to 53% with the reduced CR. Smoke emission decreased to nearly zero levels with both CRs (19:1 and 17:1). CO and HC emissions significantly decreased with 53% of DME ES with reduced CR. NOx emission decreased drastically with the reduced CR (17:1). However, brake thermal efficiency is marginally droped with the reduced compression ratio. The combustion characteristics are discussed in detail.

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Cite This Article

Sinha, S., Shere, A., Subramanian, K. A. (2022). Experimental Investigations on Enhancement of DME Energy Shares in Compression-Ignition Engine Under Dual Fuel Mode Using Reduced Compression Ratio. International Journal of Automotive Science and Technology, Volume: 6 Issue: 1. https://doi.org/10.30939/ijastech..972029

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References (3)

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