ANALOGUE CONTROLLED GASOLING FUEL INJECTION SYSTEM FOR A SINGLE CYLINDER SPARK IGNITION ENGINE

2000 ◽  
Author(s):  
Najibullah K. Omary ◽  
M. K. Gajendra Babu ◽  
J. P. Subrahmanyam ◽  
T.S. Bhatti
Keyword(s):  
Fuel Injection ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Injection System ◽  
Fuel Injection System ◽  
Single Cylinder

Performance Evaluation of Low Heat Rejection Engines

1994 ◽  
Vol 116 (4) ◽  
pp. 758-764 ◽  
Author(s):  
X. Sun ◽  
W. G. Wang ◽  
R. M. Bata ◽  
X. Gao
Keyword(s):  
Fuel Injection ◽  
Direct Injection ◽  
Combustion Process ◽  
Engine Performance ◽  
Injection System ◽  
Fuel Injection System ◽  
Heat Rejection ◽  
Single Cylinder ◽  
Single Cylinder Engine ◽  
Low Heat Rejection Engine

Improving the performance of the Chinese B135 six-cylinder direct injection turbocharged and turbocompounded Low Heat Rejection Engine (LHRE) was based on experimental and analytical studies. The studies were primarily applied on a B1135 single-cylinder LHR engine and a conventional water-cooled B1135 single cylinder engine. Performance of the B1135 LHRE was worse than that of the conventional B1135 due to a deterioration in the combustion process of the B1135 LHRE. The combustion process was improved and the fuel injection system was redesigned and applied to the B135 six-cylinder LHRE. The new design improved the performance of the LHRE and better fuel economy was realized by the thermal energy recovered from the exhaust gases by the turbocompounding system.

Burn Rate Analysis of an Ethanol-Gasoline, Dual Fueled, Spark Ignition Engine

2008 ◽  
Author(s):  
M. Mittal ◽  
G. Zhu ◽  
H. J. Schock ◽  
T. Stuecken ◽  
D. L. S. Hung
Keyword(s):  
Fuel Injection ◽  
Direct Injection ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Injection System ◽  
Dual Fuel ◽  
Polytropic Index ◽  
Light Load ◽  
Method Model ◽  
Load Conditions

An experimental study is performed to investigate the combustion characteristics of an ethanol-gasoline, dual fueled, single cylinder spark ignition (SI) engine. A dual fuel injection system with both Direct-Injection (DI) and Port-Fuel-Injection (PFI) is used in this work. The performance of PFI-E85 and DI-gasoline, and PFI-gasoline and DI-E85 systems is presented. E85 is a blend of 85% ethanol and 15% gasoline by volume. In each test, the percentage of E85 is varied from 100 (0% gasoline) to 0 (100% gasoline) to compare the various cases. PFI-gasoline and DI-gasoline (PFI & DI-gasoline) results are also presented to provide a baseline for comparison. The cycle-to-cycle variability is presented using coefficient of variation (COV) of indicated mean effective pressure (IMEP). Mass fraction burned (MFB) and burn duration are determined from the analysis of measured in-cylinder pressure data. The well known Rassweiler and Withrow method (Model 1), with a new linear model for the polytropic index, is used to obtain the MFB curves. The differences are presented for the net pressure method (Model 2) to evaluate the burn rates. It is found that combustion is faster with the increase in PFI percentage for all the three setups with dual fuel injection. The PFI-E85 and DI-gasoline system showed that the burn duration decreases significantly with the increase in PFI percentage; however, the PFI-gasoline and DI-E85 system showed only slight differences with the increase in PFI percentage. Model 2 showed good agreement with Model 1 at high load conditions; however, it predicts slower combustion at light load conditions.

Model-Based Optimization and Pressure Fluctuation Control of Pressure Reservoir in Electrically Controlled Fuel Injection System for Single Cylinder Diesel Engine

2017 ◽  
Author(s):  
Ke Zhang ◽  
Zhifeng Xie ◽  
Ming Zhou
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Diesel Engines ◽  
Pressure Fluctuation ◽  
Fuel Injection ◽  
Common Rail ◽  
Installation Space ◽  
Injection System ◽  
Fuel Injection System ◽  
Single Cylinder

Single-cylinder diesel engines usually employ mechanically actuated or time-type electrically controlled fuel injection systems. But due to the lack of flexibility to provide high pressure and fully varying injection parameters, fuel efficiency and emissions are poor. Although modern multi-cylinder engines have employed high pressure common rail fuel injection system for a long time, this technology has not been demonstrated in single-cylinder diesel engines. Due to the small installation space and little fuel injection amount of single cylinder diesel engine, high pressure common rail fuel injection system cannot be employed directly. In this study an electrically controlled high pressure fuel injection system of time-pressure-type (PTFS) for single-cylinder diesel engine was demonstrated. PTFS integrated the fuel pump and pressure reservoir (PR) to reduce installation space, which enabled it to match various kinds of single-cylinder diesel engines. However, the volume of the PR of PTFS is still limited, leading to obvious pressure fluctuation induced by periodic fuel pumping and injection. Pressure fluctuation might affect the stability and consistency of fuel injection, deteriorating the combustion and emissions of the engine further. This work established a mathematical model for the system, and studied the effect of the main parameters of the PR to the pressure fluctuations in the PR. The structure and dimensions of the system were optimized and a damping mechanism was proposed to reduce the pressure fluctuation. The optimized pressure fluctuation of PTFS achieved an acceptable level which can support steady and effective fuel injection. As a result, the fuel consumption efficiency and emission level of single cylinder diesel engine were enhanced.

scholarly journals Experimental investigations of a single cylinder genset engine with common rail fuel injection system

2014 ◽  
Vol 18 (1) ◽  
pp. 249-258 ◽  
Author(s):  
Paras Gupta ◽  
Atul Dhar ◽  
Avinash Agarwal
Keyword(s):  
Fuel Injection ◽  
Combustion Engine ◽  
Pressure Rise ◽  
Engine Performance ◽  
Common Rail ◽  
Injection System ◽  
Experimental Investigations ◽  
Fuel Injection System ◽  
Single Cylinder ◽  
Ci Engines

Performance and emissions characteristics of compression ignition (CI) engines are strongly dependent on quality of fuel injection. In an attempt to improve engine combustion, engine performance and reduce the exhaust emissions from a single cylinder constant speed genset engine, a common rail direct injection (CRDI) fuel injection system was deployed and its injection timings were optimized. Results showed that 34?CA BTDC start of injection (SOI) timings result in lowest brake specific fuel consumption (BSFC) and smoke opacity. Advanced injection timings showed higher cylinder peak pressure, pressure rise rate, and heat release rate due to relatively longer ignition delay experienced.

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