Electronic controlled high-energy direct ignition system for turbocharged CNG engine

2004 ◽  
Vol 17 (supp) ◽  
pp. 48 ◽  
Author(s):  
Daxing Wang
Keyword(s):  
High Energy ◽  
Ignition System ◽  
Cng Engine ◽  
Direct Ignition

Test Study and Development of High Energy Direct Ignition System for Electronic Control CNG Engine

2011 ◽  
Vol 201-203 ◽  
pp. 610-613 ◽  
Author(s):  
Qi Ping Chen ◽  
Hong Yu Shu ◽  
Chong Huai Shi
Keyword(s):  
Test Bench ◽  
High Energy ◽  
Optimal Test ◽  
Engine Emissions ◽  
Compressed Natural Gas ◽  
Current Time ◽  
Ignition System ◽  
Test Study ◽  
Cng Engine ◽  
Direct Ignition

According to the requirements of heavy commercial compressed natural gas (CNG) vehicle to satisfy China’s rapid economic development, the authors develop and test a new high energy direct ignition system of heavy CNG engine. Hardware and software of the high energy direct ignition system are designed and debugged. Based on the tradition test bench, an optimal test bench for this CNG engine is established. Ignition advance angle is calibrated and analyzed, which has the economy and power performances effects on CNG engine matched the developed high energy direct ignition system. To test the effects on engine emissions by high energy direct ignition system, ignition control strategy is simplified and optimized. In addition, high ignition energy is directly determined by current time of ignition coil power. A test study about torque, power and fuel consumption of this engine is accomplished. The final test results indicate that this developed high energy ignition direct system can satisfy the comprehensive performance objectives of heavy CNG engine.

Railplug Design Optimization to Improve Large-Bore Natural Gas Engine Performance

2005 ◽  
Author(s):  
Hongxun Gao ◽  
Matt J. Hall ◽  
Ofodike A. Ezekoye ◽  
Ron D. Matthews
Keyword(s):  
Natural Gas ◽  
High Energy ◽  
Parameter Study ◽  
Transfer Model ◽  
High Speed Photography ◽  
Discharge Process ◽  
Ignition System ◽  
Gas Engine ◽  
Natural Gas Engines ◽  
Natural Gas Engine

It is a very challenging problem to reliably ignite extremely lean mixtures, especially for the low speed, high load conditions of stationary large-bore natural gas engines. If these engines are to be used for the distributed power generation market, it will require operation with higher boost pressures and even leaner mixtures. Both place greater demands on the ignition system. The railplug is a very promising ignition system for lean burn natural gas engines with its high-energy deposition and high velocity plasma jet. High-speed photography was used to study the discharge process. A heat transfer model is proposed to aid the railplug design. A parameter study was performed both in a constant volume bomb and in an operating natural gas engine to improve and optimize the railplug designs. The engine test results show that the newly designed railplugs can ensure the ignition of very lean natural gas mixtures and extend the lean stability limit significantly. The new railplug designs also improve durability.

Saab Direct Ignition System and Its Cold Start Performance

1989 ◽  
Author(s):  
Sten Jiewertz ◽  
Bobby Klemisch ◽  
Torsten Anderlind ◽  
Per S. Gilibrand
Keyword(s):  
Cold Start ◽  
Ignition System ◽  
Direct Ignition

Experimental Research on a Dual-Coil Ignition System of CNG Engine

2013 ◽  
Vol 694-697 ◽  
pp. 2954-2959
Author(s):  
Hai Guo Jing ◽  
Li Ping Yang ◽  
Xiu Zhen Ma ◽  
En Zhe Song
Keyword(s):  
Voltage Regulator ◽  
Time Interval ◽  
Ignition Energy ◽  
Energy Increase ◽  
Ignition System ◽  
Charging Time ◽  
Spark Plug ◽  
Single Coil ◽  
Secondary Voltage ◽  
Cng Engine

A dual-coil ignition system was designed in order to improve ignition performance of CNG engine. The change rule of ignition energy was studied in voltage regulator tube string simulated load, the change rule of secondary voltage was studied in spark plug load. Experimental results explain that compared with single-coil ignition, the new ignition system can enhance ignition energy, increase secondary voltage, increase spark duration ,achieve multiple discharge and improve coil energy efficiency under apposite charging time to primary coils and discharging time interval to secondary coils. This system can correct discharge characters according to engine working conditions, which is very useful to CNG engine.

The Energy Release to Static Gas From a 12-Joule High Energy Ignition System

1977 ◽  
Author(s):  
J. Odgers ◽  
A. Coban
Keyword(s):  
Carbon Dioxide ◽  
Energy Source ◽  
Ionization Potential ◽  
Energy Release ◽  
High Energy ◽  
Scattered Data ◽  
Statistical Nature ◽  
Ignition System

Details are given of a calorimetric-bomb technique used to determine the energy released to the gas, from a spark derived from a high-energy source (∼12J). The statistical nature of the energy release is commented upon, and the number of repeat tests required to obtain a valid mean is discussed. Scattered data from other sources are cited, together with their relevance to the present tests. Measurements of energy are given for the single plug which was subjected to exhaustive testing over a range of pressures from 1.0 kPa to 2500 kPa, and which was repeated for various gases, namely — air, oxygen, nitrogen, carbon dioxide, helium and argon. The results of these tests may be correlated in terms of the pressure and the ionization potential of the gas.

scholarly journals Experimental Research of Ignition System for Lean Burn CNG Engine

2014 ◽  
Vol 14 (7) ◽  
pp. 677-683
Author(s):  
Jing Haiguo ◽  
Yang Liping ◽  
Ma Xiuzhen
Keyword(s):  
Experimental Research ◽  
Lean Burn ◽  
Ignition System ◽  
Cng Engine

scholarly journals Development and Application of High Energy Ignition System Using Plasma

2014 ◽  
Vol 22 (3) ◽  
pp. 148-156 ◽  
Author(s):  
Hyehyun Kang ◽  
Duwon Choi ◽  
Jinil Park ◽  
Jonghwa Lee ◽  
Kyoungseok Park ◽  
...  
Keyword(s):  
High Energy ◽  
Ignition System

Use of Railplugs to Extend the Lean Limit of Natural Gas Engines

2004 ◽  
Author(s):  
Hongxun Gao ◽  
Ron Matthews ◽  
Sreepati Hari ◽  
Matt Hall
Keyword(s):  
Natural Gas ◽  
Stability Limit ◽  
High Energy ◽  
Lean Burn ◽  
Ignition System ◽  
Natural Gas Engines ◽  
Natural Gas Engine ◽  
Spark Plug ◽  
Lean Mixtures ◽  
Ignition Characteristics

Ignition of extremely lean mixtures is a very challenging problem, especially for the low speed, high load conditions of large-bore natural gas engines. This paper presents initial results from testing a high energy ignition system, the railplug, which can assure ignition of very lean mixtures by means of its high energy deposition and high velocity jet of the plasma. Comparisons of natural gas engine tests using both a spark plug and a railplug are presented and discussed in this paper. The preliminary engine test show that the lean stability limit (LSL) can be extended from an equivalence ratio, φ, of ∼0.63 using a spark plug down to 0.56 using a railplug. The tests show that the railplug is very promising ignition system for lean burn natural gas engines and potentially for other engines that operate with very dilute mixtures. The ignition characteristics of different railplug geometric and circuit designs are also discussed.

Sign in / Sign up

Export Citation Format

Share Document