What fuel properties enable higher thermal efficiency in spark-ignited engines?

JP Szybist, S Busch, RL McCormick, JA Pihl… - Progress in Energy and …, 2021 - Elsevier
Abstract The Co-Optimization of Fuels and Engines (Co-Optima) initiative from the US
Department of Energy aims to co-develop fuels and engines in an effort to maximize energy …

An evolving research agenda of merit function calculations for new gasoline compositions

MA Ershov, VD Savelenko, NS Shvedova, VM Kapustin… - Fuel, 2022 - Elsevier
Gasoline engines have an even greater potential for optimization. New fuels composition
should be corresponded with modern engine technologies requirements. One of these …

Replicating HCCI-like autoignition behavior: What gasoline surrogate fidelity is needed?

S Cheng, SS Goldsborough, SW Wagnon… - Applications in Energy …, 2022 - Elsevier
This work seeks to characterize the fidelity needed in a gasoline surrogate with the intent to
replicate the complex autoignition behavior exhibited within advanced combustion engines …

Effect of Dibutyl Ether− Methanol Blend Ratios on Deflagration-Based and Autoignition-Based Knock in Spark-Ignition Engines

E Singh, R Abboud, T Strickland, N Kim, DL Pintor… - Fuel, 2024 - Elsevier
Methanol is an attractive fuel that can be produced using renewable sources. However, its
low reactivity may present challenges to combustion modes (like Spark-Assisted …

Particulate matter emissions in gasoline direct-injection spark-ignition engines: sources, fuel dependency, and quantities

E Singh, N Kim, D Vuilleumier, S Skeen, E Cenker… - Fuel, 2023 - Elsevier
This study investigates sources of particulate matter (PM) from a direct-injected spark-
ignition (DISI) engine, all of which are likely the result of poor mixture formation, although …

Impact of engine pressure-temperature trajectory on autoignition for varying fuel properties

JP Szybist, DA Splitter - Applications in Energy and Combustion Science, 2020 - Elsevier
Abstract The US Department of Energy's Co-Optimization of Engines and Fuels (Co-Optima)
initiative is pursuing higher efficiency engines on the basis of fuel properties, and in …

Spark knock: A source for particulate matter emissions from gasoline spark ignited engines

T Han, K Bhadra, C Solbrig, RJ Middleton… - Combustion and …, 2024 - Elsevier
This study explores the relationship between knocking and particulate matter emissions in
both single-cylinder and multi-cylinder direct injection spark ignition (DISI) engines. The …

Enabling high compression ratio in boosted spark ignition engines: thermodynamic trajectory and fuel chemistry effects on knock

FDF Chuahy, D Splitter, V Boronat, SW Wagnon - Combustion and Flame, 2020 - Elsevier
Knock remains one of the main limitations for increased internal combustion engine
efficiency. Recent trends in light-duty vehicles towards downsized, boosted engines …

Performance of octane index in LTGC engines from beyond MON to beyond RON

D Lopez-Pintor, J Dec, S Cho - Fuel, 2023 - Elsevier
This work analyzes the inability of the Octane Index (OI) to characterize the autoignition
resistance of gasoline-like fuels in a Low-Temperature Gasoline Combustion (LTGC) …

Computational Co-optimization of Fuel and Spark-Ignition Engine

P Ackermann, B Auer, P Burkardt, B Lehrheuer… - Energy & …, 2025 - ACS Publications
Spark-ignition engine efficiency can be increased by co-optimizing fuel and engine. First,
computational fuel design can optimize fuel molecules or composition using predictive fuel …