Investigation of Scavenging Process for Steady-State Operation of a Linear Internal Combustion Engine-Linear Generator Integrated System

2017 ◽  
Author(s):  
Pengfei Zang ◽  
Zhe Wang ◽  
Yu Fu ◽  
Chenle Sun
Keyword(s):  
Steady State ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Integrated System ◽  
Linear Generator ◽  
Steady State Operation

scholarly journals Experimental study of an internal combustion engine fueled by a low-calorific value producer gas

2022 ◽  
Vol 2150 (1) ◽  
pp. 012015
Author(s):  
G I Nikitina ◽  
A N Kozlov ◽  
M V Penzik
Keyword(s):  
Experimental Study ◽  
Steady State ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Calorific Value ◽  
Operating Mode ◽  
Internal Combustion ◽  
Variable Load ◽  
Producer Gas ◽  
Steady State Operation

Abstract This paper describes an experimental study of the operation of an internal combustion engine of fueled by a low-calorific value gas. The main operating parameters of low-power ICE were determined. Efficiency was also evaluated when the ICE was converted to operate on producer gas. In the experiment, it was shown that the engine reached a stable operating mode under load and data on the temperature and exhaust gases composition were obtained. According to our estimates, in the steady-state operation of the internal combustion engine with a load, the efficiency factor was about 22 %. When using the model gas, the from generator output power, was about 30-40 % of the nominal value, under variable load conditions. However, it was found that in steady-state operation, the power of the internal combustion engine was 40-55% of the nominal value.

scholarly journals Rigid body dynamics and simulation of a three-cylinder, four-stroke internal combustion engine coupled with an aircraft propeller

2021 ◽  
Author(s):  
Scott A Warwick
Keyword(s):  
Steady State ◽  
Rigid Body ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Practical Interest ◽  
Internal Combustion ◽  
Rigid Body Dynamics ◽  
Propeller Shaft ◽  
Dynamical Behaviors ◽  
Body Dynamics

Dynamical behaviors of a system consisting of a Saito-450 3-cylinder, 4-stroke engine and a variable pitch propeller are studied. The kinemtical equations for the planar 8-bar internal combustion engine are established using a complex number method. The nonlinear dynamical equation for the engine-propeller system is obtained using the Lagrange equation and solved numerically using a computer code written in the Matlab language. Various simulations were performed to study the transient and steady state dynamical behaviors of the sophisticated multiple rigid body system while taking into account the engine pressure pulsations and aerodynamic load. The steady-state motions of the propeller shaft for different engine powers and speeds were obtained and decomposed using the Fast Fourier Technique (FFT). Results presented in this thesis provide necessary input for studies of flexible body dynamics where the torsional vibration of the propeller shaft is of practical interest to design engineers in the aerospace industry.

scholarly journals Towards Ecological Alternatives in Bearing Lubrication

Lubricants ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 62
Author(s):  
Bachir Bouchehit ◽  
Benyebka Bou-Saïd ◽  
John Tichy
Keyword(s):  
Steady State ◽  
Internal Combustion Engine ◽  
Combustion Product ◽  
Combustion Engine ◽  
Mechanical Energy ◽  
Internal Combustion ◽  
Journal Bearings ◽  
Technological Solution ◽  
Engine Systems ◽  
Global Parameters

Hydrogen is the cleanest fuel available because its combustion product is water. The internal combustion engine can, in principle and without significant modifications, run on hydrogen to produce mechanical energy. Regarding the technological solution leading to compact engines, a question to ask is the following: Can combustion engine systems be lubricated with hydrogen? In general, since many applications such as in turbomachines, is it possible to use the surrounding gas as a lubricant? In this paper, journal bearings global parameters are calculated and compared for steady state and dynamic conditions for different gas constituents such as air, pentafluoropropane, helium and hydrogen. Such a bearing may be promising as an ecological alternative to liquid lubrication.

Enhancing Engine Operations in Off-Grid Renewable Energy Applications Through the Additional Use of Hydrogen

2010 ◽  
Author(s):  
Curtis Robbins ◽  
Roger Jacobson ◽  
Rick Purcell ◽  
Kirk Collier ◽  
Ralph Wagner ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Hydrogen Storage ◽  
Internal Combustion Engine ◽  
Hydrogen Generation ◽  
Combustion Engine ◽  
Current System ◽  
Electrical Power ◽  
Internal Combustion ◽  
Integrated System

The current renewable energy transformation taking place around the world has led to drastic advances in technology that relates to the issue of climate change. Although many solutions have been found and/or created, there has yet to be one that can, on its own, solve the problem of finding an environmentally friendly energy source. This leads to the challenge of creating an integrated system which relies on several components with different types of energy. It has been the goal of this study to further enhance an off-grid renewable energy power system to supply economical, secure, and continuous electrical power, in an environmentally conscious way, for various types of loads. The previous power system consisted of a mobile unit with inverters, batteries, hydrogen generator, hydrogen storage, propane storage and an internal combustion engine generator that was connected to photovoltaics and wind turbines while being controlled and monitored by a single computer unit. The only pollutants emitted from this power system were the result of the use of propane as a backup fuel, when renewable energy was insufficient. Even though propane is a fossil fuel, its use in this study allowed the system to be simpler and more cost effective. With the assistance of Southwest Gas Corporation, a more efficient and reliable internal combustion engine was acquired. The three cylinder engine, with a 10,000 hour maintenance interval, was converted from natural gas to combust either hydrogen or propane. The engine provides mechanical power to a belt driven alternator supplying electricity to the load and other components of the system. Initial testing of the engine achieved engine dynamometer efficiency of over 40% using propane at wide open throttle and 45% using hydrogen at wide open throttle. The output under these conditions was roughly 20 HP using propane and 10 HP using hydrogen. The current system is not mobile but has the potential to be mobile by using an existing KOH electrolyzer for hydrogen generation with a larger output and hydrogen storage capacity.

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