scholarly journals SI engine fuelled by injection of pure propane or pure butane into the intake manifold

2006 ◽  
Vol 125 (2) ◽  
pp. 20-27
Author(s):  
Jerzy DUTCZAK
Keyword(s):  
Liquid Phase ◽  
Single Point ◽  
Test Stand ◽  
Injection System ◽  
Intake Manifold ◽  
Effective Parameters ◽  
Si Engine ◽  
Propane Butane

The results of the simulation and the test stand investigations of the 170.A1 engine fed by the injection of a liquid phase of propane-butane or pure propane and pure butane have been reported in the article. A modified serial single point gasoline injection system and an engine controller of own design engine have been used and discussed. The Comparison of selected engine parameters for given cases of fuelling confirmed the possibility of the use of the evaporating heat of fuel to improve the cylinder filling. The effective parameters of an engine fuelled with pure propane or pure butane were more beneficial than for gasoline fuelling.

scholarly journals The effect of LPG injector position on the SI engine operation

2007 ◽  
Vol 131 (4) ◽  
pp. 33-41
Author(s):  
Piotr JAKLIŃSKI ◽  
Łukasz GRABOWSKI ◽  
Mirosław WENDEKER ◽  
Jacek CZARNIGOWSKI ◽  
Piotr SZCZĘSNY ◽  
...  
Keyword(s):  
Peak Pressure ◽  
Injection System ◽  
Intake Manifold ◽  
Si Engine ◽  
Inlet Valve ◽  
Engine Operation ◽  
Toxic Emissions ◽  
Pressure Peak ◽  
Operation Parameters

The paper presents results of experiments on operation parameters of a 4-cylinder Holden 2.0 MPFI engine, supplied with LPG by means of sequential intake-manifold injection system, in the function of the distance between the injection ferrule and the cylinder’s inlet valve. Four positions of the injection ferrule along the manifold were tested, i.e. 115, 170, 230 and 310 mm from the valve. Indicated pressure, peak pressure and toxic emissions, in the function of injection start angle, were analyzed and compared for each position. The importance of the distance between injection ferrule and inlet valve was proved.

Development of a Gas-Phase LPG Injection System for a Small SI Engine

2003 ◽  
Author(s):  
Liguang Li ◽  
Zhimin Liu ◽  
Huiping Wang ◽  
Baoqing Deng ◽  
Zhensuo Wang ◽  
...  
Keyword(s):  
Gas Phase ◽  
Injection System ◽  
Si Engine

A Control-Oriented Polytropic Model of SI Engine Intake Manifold

2003 ◽  
Author(s):  
Josˇko Deur ◽  
Davor Hrovat ◽  
Josˇko Petric´ ◽  
Zˇeljko Sˇitum
Keyword(s):  
Heat Transfer ◽  
Intake Manifold ◽  
Simple Extension ◽  
Si Engine ◽  
Polytropic Model ◽  
Back Flow ◽  
Thermal Transients ◽  
Three State Model ◽  
Transfer Properties ◽  
Variant Structure

The paper presents experimental results which show significant changes of the intake manifold air temperature during fast tip-in/tip-out engine transients. An adequate two-state polytropic manifold model is developed and experimentally validated. An emphasis is on the derivation and parameterization of a time-variant structure of the heat transfer coefficient. The polytropic manifold model is extended to a three-state form for the more general case of different heat transfer properties for the manifold plenum and runners. An influence of the engine back flow on the runner thermal transients is observed. A simple extension of the three-state model with the back flow effect is proposed.

The Research of Lean Combustion Characteristic of Compound Injection System of Direct Injection Engine

2014 ◽  
Vol 532 ◽  
pp. 362-366 ◽  
Author(s):  
Jiang Feng Mou ◽  
Rui Qing Chen ◽  
Yi Wei Lu
Keyword(s):  
Gasoline Engine ◽  
Direct Injection ◽  
Injection System ◽  
Intake Manifold ◽  
Combustion Characteristic ◽  
Injection Timing ◽  
Mixed Gas ◽  
Lean Burn ◽  
Direct Injection Engine ◽  
Lean Combustion

This paper studies the lean burn limit characteristic of the compound injection system of the direct-injection gasoline engine. The low pressure nozzle on the intake manifold can achieve quality homogeneous lean mixture, and the direct injection in the cylinder can realized the dense mixture gas near the spark plug. By adjusting the two injection timing and injection quantity, and a strong intake tumble flow with special shaped combustion chamber, it can produces the reverse tumble to form different hierarchical levels of mixed gas in the cylinder. Experimental results show: the compound combustion system to the original direct-injection engine lean burn limit raise 1.8-2.5 AFR unit.

Analysis of Variable Intake Runner Lengths and Intake Valve Open Timings on Engine Performances

2014 ◽  
Vol 663 ◽  
pp. 336-341 ◽  
Author(s):  
Mohd Farid Muhamad Said ◽  
Zulkarnain Abdul Latiff ◽  
Aminuddin Saat ◽  
Mazlan Said ◽  
Shaiful Fadzil Zainal Abidin
Keyword(s):  
Engine Performance ◽  
Intake Manifold ◽  
Intake Valve ◽  
Si Engine ◽  
Engine Simulation ◽  
Engine Model ◽  
Optimum Parameters ◽  
Comparison Results ◽  
Variable Valve ◽  
Engine Development

In this paper, engine simulation tool is used to investigate the effect of variable intake manifold and variable valve timing technologies on the engine performance at full load engine conditions. Here, an engine model of 1.6 litre four cylinders, four stroke spark ignition (SI) engine is constructed using GT-Power software to represent the real engine conditions. This constructed model is then correlated to the experimental data to make sure the accuracy of this model. The comparison results of volumetric efficiency (VE), intake manifold air pressure (MAP), exhaust manifold back pressure (BckPress) and brake specific fuel consumption (BSFC) show very well agreement with the differences of less than 4%. Then this correlated model is used to predict the engine performance at various intake runner lengths (IRL) and various intake valve open (IVO) timings. Design of experiment and optimisation tool are applied to obtain optimum parameters. Here, several configurations of IRL and IVO timing are proposed to give several options during the engine development work. A significant improvement is found at configuration of variable IVO timing and variable IRL compared to fixed IVO timing and fixed IRL.

scholarly journals Kaji Eksperimental Rasio Metanol-Bensin Terhadap Konsumsi Bahan Bakar, Emisi Gas Buang, Torsi Dan Daya

2018 ◽  
Vol 1 (1) ◽  
pp. 47
Author(s):  
Mohamad Rifal ◽  
Nazarudin Sinaga
Keyword(s):  
Fuel Consumption ◽  
Alternative Fuel ◽  
Experimental Result ◽  
Injection System ◽  
Exhaust Emission ◽  
Emission Power ◽  
Si Engine ◽  
Fuel Blend ◽  
The One

Methanol (CH3OH) is the one of an alternative fuel for SI engine. Methanol has a similiar charakteristic and fisik properties to gasoline. This study using methanol-gasoline fuel blend (M10, M20 and M40). The aim of this study was to determine the effect of using methanol-gasoline fuel blend of  fuel consumption, exhaust emission, power and torque. In the experiment,  an engine three-cylidre 12 valve with tecnology DOHC Mivec and ECI MPI injection System 1193 cc was used. With a little modification that is using methanol controler to maximize the result of research. The experimental result showed that the fuel consumption decrease with the use of methanol-gasoline ful blend. Each of these reductions in fuel consumption for the M10, M20 and M40 are 1 %, 3% dan 3%. The Power and Torque is increas while using fuel blend than gasoline and it also decrease exhaust emission

scholarly journals An Experimental and Modeling Study of HCCI Combustion Using n-Heptane

2009 ◽  
Vol 132 (2) ◽  
Author(s):  
Hongsheng Guo ◽  
W. Stuart Neill ◽  
Wally Chippior ◽  
Hailin Li ◽  
Joshua D. Taylor
Keyword(s):  
Low Temperature ◽  
Internal Combustion Engines ◽  
Fuel Injection ◽  
Combustion Process ◽  
Injection System ◽  
Intake Manifold ◽  
Strong Impact ◽  
Oxides Of Nitrogen ◽  
Hcci Combustion ◽  
Modeling Study

Homogeneous charge compression ignition (HCCI) is an advanced low-temperature combustion technology being considered for internal combustion engines due to its potential for high fuel conversion efficiency and extremely low emissions of particulate matter and oxides of nitrogen (NOx). In its simplest form, HCCI combustion involves the auto-ignition of a homogeneous mixture of fuel, air, and diluents at low to moderate temperatures and high pressure. Previous research has indicated that fuel chemistry has a strong impact on HCCI combustion. This paper reports the preliminary results of an experimental and modeling study of HCCI combustion using n-heptane, a volatile hydrocarbon with well known fuel chemistry. A Co-operative Fuel Research (CFR) engine was modified by the addition of a port fuel injection system to produce a homogeneous fuel-air mixture in the intake manifold, which contributed to a stable and repeatable HCCI combustion process. Detailed experiments were performed to explore the effects of critical engine parameters such as intake temperature, compression ratio, air/fuel ratio, engine speed, turbocharging, and intake mixture throttling on HCCI combustion. The influence of these parameters on the phasing of the low-temperature reaction, main combustion stage, and negative temperature coefficient delay period are presented and discussed. A single-zone numerical simulation with detailed fuel chemistry was developed and validated. The simulations show good agreement with the experimental data and capture important combustion phase trends as engine parameters are varied.

Sign in / Sign up

Export Citation Format

Share Document