Experimental performance investigation of an electronic fuel injection-SI engine fuelled with HCNG (H2 + CNG) for cleaner transportation

A novel fuel atomization device (Nanomiser™) was evaluated under laboratory conditions with respect to its ability to reduce SI engine cold-start hydrocarbon emissions. First, comparisons between the level of atomization using the conventional, pintle-type fuel injector and the novel atomizer were carried out using flow visualization in a spray chamber and particle size distribution. The novel atomizer is capable of producing sub-micron fuel droplets, which form an ultra-fine mist with outstanding non-wetting characteristics. To capitalize on these atomization characteristics, this device was compared to a conventional fuel injector in a small, two-cylinder, SI engine under a number of operating conditions. Results show a slightly enhanced combustion quality and lean limit under warm operating conditions and a dramatic reduction in unburned HC emission under cold operating conditions, with cold emissions with the Nanomiser™ matching those with a conventional injector under fully warm conditions.

Download Full-text

Experimental Comparative Study on Performance and Emissions of E85 Adopting Different Injection Approaches in a Turbocharged PFI SI Engine

Energies ◽

10.3390/en12081555 ◽

2019 ◽

Vol 12 (8) ◽

pp. 1555 ◽

Cited By ~ 1

Author(s):

Cinzia Tornatore ◽

Luca Marchitto ◽

Maria Antonietta Costagliola ◽

Gerardo Valentino

Keyword(s):

Fuel Injection ◽

Reference Conditions ◽

Engine Performance ◽

Exhaust Emissions ◽

Intake Manifold ◽

Si Engine ◽

Spark Timing ◽

Performance And Emissions ◽

Ethanol Blends ◽

Cylinder Port

This study examines the effects of ethanol and gasoline injection mode on the combustion performance and exhaust emissions of a twin cylinder port fuel injection (PFI) spark ignition (SI) engine. Generally, when using gasoline–ethanol blends, alcohol and gasoline are externally mixed with a specified blending ratio. In this activity, ethanol and gasoline were supplied into the intake manifold into two different ways: through two separated low pressure fuel injection systems (Dual-Fuel, DF) and in a blend (mix). The ratio between ethanol and gasoline was fixed at 0.85 by volume (E85). The initial reference conditions were set running the engine with full gasoline at the knock limited spark advance boundary, according to the standard engine calibration. Then E85 was injected and a spark timing sweep was carried out at rich, stoichiometric, and lean conditions. Engine performance and gaseous and particle exhaust emissions were measured. Adding ethanol could remove over-fueling with an increase in thermal efficiency without engine load penalties. Both ethanol and charge leaning resulted in a lowering of CO, HC, and PN emissions. DF injection promoted a faster evaporation of gasoline than in blend, shortening the combustion duration with a slight increase in THC and PN emissions compared to the mix mode.

Download Full-text

Combustion Characteristics and Performance Increase of an LPG-SI Engine with Liquid Fuel Injection System

10.4271/2009-01-2785 ◽

2009 ◽

Cited By ~ 10

Author(s):

Norifumi Mizushima ◽

Susumu Sato ◽

Yasuhiro Ogawa ◽

Toshiro Yamamoto ◽

Umerujan Sawut ◽

...

Keyword(s):

Liquid Fuel ◽

Fuel Injection ◽

Combustion Characteristics ◽

Injection System ◽

Fuel Injection System ◽

Si Engine ◽

And Performance

Download Full-text

Dual Fuel Injection (DI + PFI) for Knock and EGR Dilution Limit Extension in a Boosted SI Engine

10.4271/2018-01-1735 ◽

2018 ◽

Cited By ~ 2

Author(s):

Taehoon Han ◽

George Lavoie ◽

Margaret Wooldridge ◽

André Boehman

Keyword(s):

Fuel Injection ◽

Dual Fuel ◽

Si Engine

Download Full-text

Effects of Fuel Injection Method on Energy Efficiency and Combustion Characteristics of SI Engine Fed with a Hydrogen-Rich Reformate

10.4271/2020-01-2082 ◽

2020 ◽

Author(s):

Andy Thawko ◽

Shalom-Adam Persy ◽

Amnon Eyal ◽

Leonid Tartakovsky

Keyword(s):

Energy Efficiency ◽

Fuel Injection ◽

Combustion Characteristics ◽

Si Engine ◽

Injection Method

Download Full-text

Gasoline Fuel Injection Investigations On Single Cylinder SI Engine

10.4271/2005-26-012 ◽

2005 ◽

Cited By ~ 8

Author(s):

A. A. Latey ◽

T. S. Bhatti ◽

L. M. Das ◽

M. K. Gajendra Babu

Keyword(s):

Fuel Injection ◽

Si Engine ◽

Single Cylinder

Download Full-text

Effects of CNG Injection Pressure on Performance, Emission and Combustion Characteristics of Multi-cylinder SI Engine

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.c4662.098319 ◽

2019 ◽

Vol 8 (3) ◽

pp. 2383-2387

Keyword(s):

Compression Ratio ◽

Fuel Injection ◽

Injection Pressure ◽

Injection System ◽

Combustion Analysis ◽

Si Engine ◽

Performance And Emission ◽

Port Fuel Injection ◽

Spark Timing ◽

Fuel Injection Pressure

This Paper shows the effect of port fuel injection pressure of CNG in 3-cylinder SI Engine at Wide Open Throttle position using sequential port fuel injection system. All trials are performed on 4-stroke, 796 cc MPFI S.I engine at injection pressure of 2.0, 2.2, 2.4, 2.6, 2.8 bar for constant speed of 2500, 3000, 3500, 4000 & 4500 rpm. During the trial compression ratio is kept constant at 9.2 with Maximum Brake Torque (MBT) spark timing of 15oBTDC. Optimum torque is obtained for CNG at injection pressure of 2.6 bar and 3000 rpm. Gasoline trials are performed at same compression ratio for comparison with CNG at same injection pressure. Performance and emission characteristics with combustion analysis are performed at optimum injection pressure of 2.6 bar.

Download Full-text

An Investigation of Lean Burn in a 2-Valve TJ376QE SI Engine

ASME 2005 Internal Combustion Engine Division Fall Technical Conference (ICEF2005) ◽

10.1115/icef2005-1250 ◽

2005 ◽

Author(s):

Shu-Liang Liu ◽

Tian-You Wang ◽

Hong-Jun Su ◽

Xing Li ◽

Jian-Wen Li ◽

...

Keyword(s):

Gasoline Engine ◽

Fuel Injection ◽

Single Injection ◽

Fuel Mixture ◽

Strength Distribution ◽

Injection System ◽

Si Engine ◽

Lean Burn ◽

Load Range ◽

Intake Swirl

The intake system of a 2-Valve TJ376QE gasoline engine was modified so that its intake swirl and tumble motions were considerably intensified. The stronger air motions are helpful to organize air and fuel mixture strength distribution. The previous port electronic fuel injection system was modified and the technique of TEFI (Twice Electronic Fuel Injection per cycle) is employed. Through regulations of the two injection timings and proportions, an adequate air and fuel mixture stratification–quasi-homogenous mixture was produced and the lean burn can be realized in a product 2-valve S.I. engine. The experimental results show that the scope of bsfc reduction can be >10 % at quite wide load range by ether 1 injection or by 2 injections. Comparing to the conventional single injection, a leaner mixture can be used by TEFI and an even more reduced fuel consumption of 5% was reached by 2 injections. The optimized values of A/F ratio can be higher by 2–3 units of A/F than that of the single injection method. The TEFI can reduce NOx emission by 35–50% than that of single injection at engine load (bmep) range of 0.20–0.75 (MPa).

Download Full-text