Impact of octane sensitivity and thermodynamic conditions on combustion process of spark-ignition to compression-ignition through an optical rapid compression machine

Super-knock suppression for highly turbocharged spark ignition engines using the fuel of propane or methanol

Effect of Thermodynamic Conditions on Spark Ignition to Compression Ignition in Ultra-Lean Mixture Using Rapid Compression Machine

Investigating auto-ignition behavior of n-heptane/iso-octane/ethanol mixtures for gasoline surrogates through rapid compression machine measurement and chemical kinetics analysis

Experimental Research on Pre-chamber Jet Ignition in Rapid Compression Machine and Natural Gas Engine

Pre-chamber jet ignition is a promising technology for spark ignition engines. In this paper, classical pre-chamber jet ignition and a new pre-chamber jet ignition method named flame accelerated ignition are investigated. Utilizing the connecting nozzles to generate the jets is the classical form of pre-chamber jet ignition. Two combustion modes were found by the RCM experiments with optical method: double stage combustion and single stage combustion. Double stage combustion mode takes place in the condition with relatively small nozzle dimension, showing long ignition delay and extremely short combustion duration. The jets cannot ignite the mixture directly. Instead, ignition happens at a central position in the main chamber after a lag time followed by the rapid development of the flame with similar speed in each direction. However, the double stage combustion mode has poor combustion stability due to the high randomness of the ignition process inside the main chamber. With single stage combustion mode, the ignition delay and the combustion duration can be shortened simultaneously with satisfying combustion stability. The combustion processes inside the pre-chamber and the main chamber take place continuously. The flame jet develops from the nozzle, composed of thin fire near the nozzle and approximately conical fire in the tip. The speed of flame jet exceeds 15 times than that of conventional flame propagation. According to the concept of pre-chamber jet ignition and the phenomenon of flame acceleration in tunnel, a new ignition method named flame accelerated ignition (FAI) is proposed. The flame acceleration tunnel can be regarded as a pre-chamber, where flame acceleration happens. Then the combustion in the main-chamber can be induced by the flame jet rushed out of the tunnel. The RCM experiments indicated that the combustion could be evidently enhanced by FAI. The flame jet maintains nearly cylindrical with favorable speed characteristic. Higher indicated thermal efficiency is gained by applying FAI compared to conventional spark ignition in the natural gas engine. In addition, introducing residual gas cavity into the flame acceleration tunnel could expand the misfire limit and improve the defect of FAI mode in lean-burn conditions.

A chemical kinetic mechanism for the low- and intermediate-temperature combustion of Polyoxymethylene Dimethyl Ether 3 (PODE 3 )

An exploration of utilizing low-pressure diesel injection for natural gas dual-fuel low-temperature combustion

Ignition of a Single Lubricating Oil Droplet in Combustible Ambient Gaseous Mixture under High-Temperature and High-Pressure Conditions

A rapid compression machine study of autoignition, spark-ignition and flame propagation characteristics of H2/CH4/CO/air mixtures

Experimental and numerical investigation on H2/CO formation and their effects on combustion characteristics in a natural gas SI engine

Experimental Study of Lean Mixture Combustion at Ultra-High Compression Ratios in a Rapid Compression Machine

Combustion and Emission Characteristics of WDF in a Light-Duty Diesel Engine over Wide Load Range

Experimental Investigation of Improving Homogeneous Charge Induced Ignition (HCII) Combustion at Medium and High Load by Reducing Compression Ratio

Knocking combustion in spark-ignition engines

Development of Surrogate Model for Oxygenated Wide-Distillation Fuel with Polyoxymethylene Dimethyl Ether

Measurement of reaction rate constants using RCM: A case study of decomposition of dimethyl carbonate to dimethyl ether

A generalized kinetic model with variable octane number for engine knock prediction

A multi-component wide distillation fuel (covering gasoline, jet fuel and diesel fuel) mechanism for combustion and PAH prediction

Experimental Study of Flame Accelerated Ignition on Rapid Compression Machine and Heavy Duty Engine

Study on combustion and emission characteristics of Polyoxymethylene Dimethyl Ethers/diesel blends in light-duty and heavy-duty diesel engines

Hydrogen formation from methane rich combustion under high pressure and high temperature conditions

Numerical Study of Gasoline Homogeneous Charge Induced Ignition (HCII) by Diesel with a Multi-Component Chemical Kinetic Mechanism

Exploiting new combustion regime using multiple premixed compression ignition (MPCI) fueled with gasoline/diesel/PODE (GDP)

Effect of Oil and Gasoline Properties on Pre-Ignition and Super-Knock in a Thermal Research Engine (TRE) and an Optical Rapid Compression Machine (RCM)

An adaptive distance-based group contribution method for thermodynamic property prediction

A new distance-based group contribution method that describes intramolecular interactions systematically is developed to calculate thermodynamic properties accurately and efficiently.

Homogeneous charge compression ignition (HCCI) combustion of polyoxymethylene dimethyl ethers (PODE)

Numerical simulation of detonation initiation induced by shock wave reflection in a rapid compression machine

Highly turbocharged gasoline engine and rapid compression machine studies of super-knock

Super-knock has been a significant obstacle for the development of highly turbocharged (downsized) gasoline engines with spark ignition, due to the catastrophic damage super-knock can cause to the engine. According to previous research by the authors, one combustion process leading to super-knock may be described as hot-spot induced pre-ignition followed by deflagration which can induce detonation from another hot spot followed by high pressure oscillation. The sources of the hot spots which lead to pre- ignition (including oil films, deposits, gas-dynamics, etc.) may occur sporadically, which leads to super-knock occurring randomly at practical engine operating conditions. In this study, a spark plasma was used to induce preignition and the correlation between super- knock combustion and the thermodynamic state of the reactant mixture was investigated …

Shock wave reflection induced detonation (SWRID) under high pressure and temperature condition in closed cylinder

First-stage ignition delay in the negative temperature coefficient behavior: Experiment and simulation

Improvement of emission characteristics and thermal efficiency in diesel engines by fueling gasoline/diesel/PODEn blends

Experimental Investigation of Homogeneous Charge Induced Ignition (HCII) with Low-Pressure Injection to Reduce PM Emissions in a Heavy-Duty Engine

Highly Turbocharged Gasoline Engine and Rapid Compression Machine Studies of Super-Knock

Role of Wall Effect on Hot-Spot Induced Deflagration to Detonation in Iso-Octane/Air Mixture Under High Temperature and Pressure

Effects of thermodynamic conditions on the end gas combustion mode associated with engine knock

Relationship between super-knock and pre-ignition

Analysis of pre-ignition to super-knock: Hotspot-induced deflagration to detonation

Intermediate species measurement during iso-butanol auto-ignition

Experimental study of microwave resonance plasma ignition of methane–air mixture in a constant volume cylinder

Investigations into Multiple Premixed Compression Ignition Mode Fuelled with Different Mixtures of Gasoline and Diesel

Investigation into the Effect of Flame Propagation in the Gasoline Compression Ignition by Coupling G-Equation and Reduced Chemical Kinetics Combustion Model

Experimental Study on Pre-Ignition and Super-Knock in Gasoline Engine Combustion with Carbon Particle at Elevated Temperatures and Pressures

Temporally and spatially distributed combustion in low-octane gasoline multiple premixed compression ignition mode

Combustion and emission characteristics of Multiple Premixed Compression Ignition (MPCI) mode fuelled with different low octane gasolines

Combustion and emission characteristics of direct injection compression ignition engine fueled with Full Distillation Fuel (FDF)

Performance, Combustion and Emission Characteristics of Polyoxymethylene Dimethyl Ethers (PODE3-4)/ Wide Distillation Fuel (WDF) Blends in Premixed Low Temperature Combustion (LTC)

Performance, combustion and emission characteristics of a diesel engine fueled with polyoxymethylene dimethyl ethers (PODE3-4)/ diesel blends

Comparative study on alcohols–gasoline and gasoline–alcohols dual-fuel spark ignition (DFSI) combustion for high load extension and high fuel efficiency

Visualization of the Mode Shapes of Pressure Oscillation in a Cylindrical Cavity

An Experimental Study on the Effects of Split Injection in Stoichiometric Dual-Fuel Compression Ignition (SDCI) Combustion

Effects of buffer gas composition on low temperature ignition of iso-octane and n-heptane

Combustion Mode Switch by Integrating Stoichiometric ASSCI Mode in a Four-cylinder Gasoline SI/HCCI Engine

Combustion and Emission Characteristics of Multiple Premixed Compression Ignition (MPCI) Mode with Low Octane Gasoline Fuels

An Experimental Study of EGR-Controlled Stoichiometric Dual-fuel Compression Ignition (SDCI) Combustion

Experimental Study of Multiple Premixed Compression Ignition Engine Fueled with Heavy Naphtha for High Efficiency and Low Emissions

Frequency domain analysis of knock images

Investigation on Pre-ignition and Super-Knock in Highly Boosted Gasoline Direct Injection Engines

Effects of gasoline research octane number on premixed low-temperature combustion of wide distillation fuel by gasoline/diesel blend

Combustion and emission characteristics of Multiple Premixed Compression Ignition (MPCI) fuelled with naphtha and gasoline in wide load range

The Effect of Oil Intrusion on Super Knock in Gasoline Engine

Study of Engine Knock in HCCI Combustion using Large Eddy Simulation and Complex Chemical Kinetics

Comparative Study of Low Octane Gasoline Multiple Premixed Compression Ignition and Conventional Diesel Combustion

New premixed compression ignition concept for direct injection IC engines fueled with straight-run naphtha

Fuel octane effects on gasoline multiple premixed compression ignition (MPCI) mode

Effect of Injection Timing on PPCI and MPCI Mode Fueled With Straight-Run Naphtha

Comparative study on Gasoline Homogeneous Charge Induced Ignition (HCII) by diesel and Gasoline/Diesel Blend Fuels (GDBF) combustion

Performance of straight-run naphtha single- and two-stage combustion modes from low to high load

Parameter study of common rail pressure for low octane gasoline multiple premixed compression ignition (MPCI) in light-duty diesel engine

High Efficiency and Low Pollutants Combustion: Gasoline Multiple Premixed Compression Ignition (MPCI)

Knocking Suppression using Stratified Stoichiometric Mixture in a DISI Engine

Experiment and Chemical Kinetics Analysis of Active Atmosphere with Different Fuels in HCCI Combustion

Research on Steady and Transient Performance of an HCCI Engine with Gasoline Direct Injection

Multi-dimensional Simulation of HCCI Engine Using Parallel Computation and Chemical Kinetics

Mode Switch of SI-HCCI Combustion on a GDI Engine

HCCI Combustion Control by Injection Strategy with Negative Valve Overlap in a GDI Engine

Modeling of HCCI Combustion: From 0D to 3D

Effects of Spark Ignition and Stratified Charge on Gasoline HCCI Combustion With Direct Injection

Numerical Simulation of HCCI Engine With Multi-Stage Gasoline Direct Injection Using 3D-CFD With Detailed Chemistry