scholarly journals New Power Train Concept for a City Hybrid Vehicle

Proceedings ◽  
2020 ◽  
Vol 58 (1) ◽  
pp. 6
Author(s):  
Roberto Capata
Keyword(s):  
Gate Valve ◽  
Rotation Speed ◽  
Electrical Power ◽  
Real Field ◽  
Power Train ◽  
Hybrid Propulsion ◽  
Performance Point ◽  
Original Group ◽  
Combustible Gases ◽  
Mechanical Decoupling

This research aims to test the feasibility of a prototype of a newly designed thermal engine for a hybrid propulsion vehicle. This study consists of the implementation of an innovative supercharger for city car ICE (900cc). The preliminary proposal presented here is to mechanically disconnect the compressor/turbine device, supporting the rotation of the compressor with a dedicated electric motor and connecting a turbine to a generator. Mechanical decoupling will allow both machines to be designed for operating closer to their maximum performance point, for most of the expected real field of operation. Specifically, the turbine is likely to have a slightly lower rotation speed than the original group and will, therefore, be slightly larger. The advantage is that, while in the current supercharger groups the surplus at high regimes is discharged through the waste-gate valve without expanding in a turbine, in the configuration proposed, all the energy of the combustible gases is used by the turbine to generate electrical power that can be used where required. Once the motorization of the vehicle (999 cc) has been fixed, the two turbomachines will have to be studied and designed, looking, where possible, for commercial components. Finally, a CFD will be needed to verify the validity of the choice, followed by careful experimentation campaigns.

scholarly journals Preliminary Analysis of a New Power Train Concept for a City Hybrid Vehicle

Designs ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 19
Author(s):  
Roberto Capata
Keyword(s):  
Gate Valve ◽  
Combustion Engine ◽  
Fluid Dynamic ◽  
Electrical Power ◽  
Real Field ◽  
Power Train ◽  
Hybrid Propulsion ◽  
Performance Point ◽  
Combustible Gases ◽  
Mechanical Decoupling

This research aims to test the feasibility of a prototype of a newly designed thermal engine for a hybrid propulsion vehicle. This study consists of the implementation of an innovative supercharger for city car internal combustion engine ICE (900 cc). The preliminary proposal presented here is to mechanically disconnect the compressor/turbine device, supporting the rotation of the compressor with a dedicated electric motor and connecting a turbine to a generator. Mechanical decoupling will allow both machines to be designed for operating closer to their maximum performance point, for most of the expected real field of operation. Specifically, the turbine is likely to have a lower rotation speed than the original group and will, therefore, be slightly larger. The advantage is that, while in the current supercharger groups the surplus at high regimes is discharged through the waste-gate valve without expanding in a turbine, in the configuration proposed, all the energy of the combustible gases is used by the turbine to generate electrical power that can be used where required. Once the motorization of the vehicle (999 cc) has been fixed, the two turbomachines will have to be studied and designed, looking where possible, for commercial components. Finally, a computational fluid dynamic CFD will be needed to verify the validity of the choice, followed by careful experimentation campaigns.

Naval Hybrid Power Take-Off and Power Take-In – Lessons Learnt and Future Advances

2018 ◽  
Author(s):  
M Benatmane ◽  
B Salter
Keyword(s):  
Electrical Power ◽  
Maritime Industry ◽  
Propulsion Systems ◽  
Systems Architecture ◽  
Hybrid Propulsion ◽  
Leading Role ◽  
Lessons Learnt ◽  
Marine Industry ◽  
Operational Systems ◽  
Great Pressure

With the ever tightening of budgets and legislation, new vessel builds are facing tough times.  The future maritime industry requires more efficient vessels to minimise ship operational costs with cleaner technologies that meet stringent environment regulations, reduce greenhouse gas emissions, specifically carbon emissions. Emissions reduction continues to be high on the agenda for the marine industry, it is responsible for about 2.5 percent of global greenhouse emissions1 and is under great pressure to reduce its environmental impact. With pressure comes the opportunity to incentivize innovation, developments and implementation of energy efficient measures, both design and operational. Naval propulsion systems are no different from other industries, and the industry is exploring ways to optimise propulsion and electrical power generation systems architecture for better performance and efficiency. Electric technology plays a leading role. The paper will: Provide a brief overview about the hybrid propulsion concept, with key electrical, mechanical qualities and issues. Describe different designs configurations and performances of hybrid propulsion systems from demonstrated and operational systems in the commercial and naval world. Cover the lessons learnt in technologies and controls used on such systems. Examine future architectures including energy storage and explore the benefits and the flexibility these can bringto the hybrid propulsion sphere.

scholarly journals Energy Harvesting Technology for turbocompounding automotive engines with waste-gate valve

2019 ◽  
Vol 113 ◽  
pp. 03020
Author(s):  
Vittorio Usai ◽  
Silvia Marelli ◽  
Avinash Renuke ◽  
Alberto Traverso
Keyword(s):  
Fuel Consumption ◽  
Environmental Protection Agency ◽  
Gate Valve ◽  
Combustion Engine ◽  
Power Level ◽  
Electrical Power ◽  
Residual Energy ◽  
Exhaust Gas ◽  
Passenger Cars ◽  
Automotive Engines

The reduction of CO2 and, more generally, GHG (Green House Gases) emissions imposed by the European Commission (EC) and the Environmental Protection Agency (EPA) for passenger cars has driven the automotive industry to develop technological solutions to limit exhaust emissions and fuel consumption, without compromising vehicle performance and drivability. In a mid-term scenario, hybrid powertrain and Internal Combustion Engine (ICE) downsizing represent the present trend in vehicle technology to reduce fuel consumption and CO2 emissions. Concerning downsizing concept, to maintain a reasonable power level in small engines, the application of turbocharging is mandatory for both Spark Ignition (SI) and Diesel engines. Following this aspect, the possibility to recover the residual energy of the exhaust gases is becoming more and more attractive, as demonstrated by several studies around the world. One method to recover exhaust gas energy from ICEs is the adoption of turbo-compounding technology to recover sensible energy left in the exhaust gas by-passed through the waste-gate valve. In the paper, an innovative option of advanced boosting system is investigated through a bladeless micro expander, promising attractive cost-competitiveness. The numerical activity was developed on the basis of experimental data measured on a waste-gated turbocharger for downsized SI automotive engines. To this aim, mass flow rate through the by-pass valve and the turbine impeller was measured for different waste-gate settings in steady-state conditions at the turbocharger test bench of the University of Genoa. The paper shows that significant electrical power can be harvested from the waste-gate gases, up to 94 % of compressor power, contributing to fuel consumption reduction.

Preliminary Results of a Measurement Station to Characterize the Wind Energy Potential at the Eastern of Mexico

2010 ◽  
Author(s):  
Rolando Soler-Bientz ◽  
Lifter Ricalde-Cab
Keyword(s):  
Power Systems ◽  
Electrical Power ◽  
Ground Level ◽  
General Idea ◽  
Wind Data ◽  
Real Field ◽  
Energy Potential ◽  
Wind Energy Potential ◽  
Wind Power Systems ◽  
Wind Resources

The evaluation of wind power systems under real field conditions is essential to predict their actual capacity to convert the energy available in the wind into electrical power contributing to develop more robust applications. Detailed studies of the wind resources play a crucial role to estimate whether electricity can be generated from the wind at a reasonable cost for a specific region, Wind data collected from meteorological stations at the standard height (usually 10m above the ground level) can give a general idea about the energy availability but to obtain more precise estimates systematic data acquisition, analysis and presentation of wind data should be carried out for heights comparable to those of modern wind turbines (typically between 30 and 120m height). This paper presents the results obtained from a wind measurement station installed to monitor the wind speed and direction at 10m and 30m heights over three years at the Yucatan Peninsula in the eastern of Mexico. This study will allow establishing the basics conditions for futures studies about the wind conditions at higher heights.

Electric Vehicle Improved by Three-Phase Asynchronous Cooled Motor

2013 ◽  
Author(s):  
Giuseppe Rattighieri ◽  
Michele Trancossi ◽  
Nicola Dorigo Salomon ◽  
Dean Vucinic
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
High Speed ◽  
Rotation Speed ◽  
Reggio Emilia ◽  
Heavy Load ◽  
Power Train ◽  
Electric Car ◽  
Three Phase ◽  
Cabin Interior

This paper presents the EVITA electric car. EVITA is the acronym of Electric Vehicle Improved by Three-phase Asynchronous cooled motor. It is a research project developed jointly by RGEngineering and University of Modena and Reggio Emilia. It aims to produce a novel electric power train with the capability of solving three fundamental problems of today commercial electric vehicles: 1. direct torque dependency of the rotation speed, and its reduction at high speed regimes; 2. electric motors performances reduction due to the overheating effects under heavy load conditions; 3. acclimatization of the car cabin interior in winter times.

Equal Precision Rotation Speed Measurement System of Vichicle Transmission

2013 ◽  
Vol 765-767 ◽  
pp. 2153-2158
Author(s):  
Hong Tao Li
Keyword(s):  
Measurement System ◽  
Precision Measurement ◽  
Measurement Accuracy ◽  
Rotation Speed ◽  
Measurement Methods ◽  
Control Technology ◽  
Electronic Control ◽  
Power Train ◽  
Speed Measurement ◽  
Wide Range

The rev of vehicle transmission is an important parameter to reflect the performance of the power train, and the measurement accuracy will have an influence on the implement of electronic control technology in transmission system. Based on the analysis of common rev measurement methods, aiming at the feature of wide range of rev during HMCVT test, a method of rev equal precision measurement is been put forward.

Economic Benefits of Hybrid Drive Propulsion for DDG-51 Class Ships

2008 ◽  
Author(s):  
Fred T. Willett ◽  
Greg Reed ◽  
Gene Castles
Keyword(s):  
Performance Optimization ◽  
Electrical Power ◽  
Economic Benefits ◽  
Propulsion System ◽  
Permanent Magnet Motors ◽  
Hybrid Drive ◽  
Hybrid Propulsion ◽  
Low Speed ◽  
Fuel Savings ◽  
Turbine Generators

The typical operating profile for destroyers and other marine vessels includes a large portion of low-speed activity. Low-speed operation is accompanied by propulsion system inefficiency, as the propulsion turbines are operating off-design. Low speeds are further enabled by propeller pitch variation, which exacerbates system inefficiency. A hybrid propulsion system scheme is proposed that will allow propulsion by either mechanical or electrical drive. Electrical power generated by the ship service turbine-generators (SSTGs) is used to drive large permanent magnet motors. The motors then drive the propeller shafts during low speed operation. This scheme allows the propulsion turbines to be shut down and the ship service turbine-generators to run closer to design point, resulting in fuel savings. Additional savings are possible at higher speeds by operating the motor(s) in generation mode, enabling SSTG shut down and propulsion turbine performance optimization. This paper describes in detail the concept of hybrid drive operation and demonstrates the economic justification for such a system.

scholarly journals APLIKASI TEKNOLOGI PLTMH TURBIN PROPELLER OPEN FLUME SEBAGAI PEMBANGKIT LISTRIK DESA

2020 ◽  
Vol 1 (2) ◽  
pp. 39
Author(s):  
Aris Suryadi ◽  
Mochamad Faisal ◽  
Berayan Munthe ◽  
Mindit Eriyadi ◽  
Junaidy Burhan
Keyword(s):  
Power Plants ◽  
Rotation Speed ◽  
Water Discharge ◽  
Electrical Power ◽  
Hydro Power ◽  
Micro Power ◽  
Survey Results ◽  
Hydro Power Plants ◽  
Generator Design ◽  
Fall Height

Berecek Village, located in Sukatani District, Purwakarta Regency, West Java Province, has a river that has not been used optimally. This community service aims to utilize the available water energy so that it can produce Micro Hydro power plants. The manufacture of a micro-hydro power plant starts from measuring water potential, designing turbines and generators, then observing the work system and estimating the electrical power that will be generated. From the survey results, it is known that the water discharge is 0.0059 m3 / s and has a fall height of 4 m. This data is used to select the type of turbine, reservoir selection, quick pipe, and generator design. The results of the manufacture of micro power plants obtained by designing using an open flume propeller turbine with a turbine rotation speed of 2063 rpm, this PLTMH is able to produce turbine power of 1346 watts with a water discharge of 45 liters / second so that the power obtained is 1076 watts. 

scholarly journals Analysis of the possibility of using an engine with a rotating piston as the propulsion of an electric generator in application to a motor glider propulsion

2019 ◽  
Vol 178 (3) ◽  
pp. 264-268 ◽  
Author(s):  
Marek ORKISZ ◽  
Piotr WYGONIK ◽  
Michał KUŹNIAR ◽  
Maciej KALWARA
Keyword(s):  
Engine Speed ◽  
Propulsion System ◽  
Point Of View ◽  
Hybrid Drive ◽  
Current Generator ◽  
Hybrid Propulsion ◽  
Electric Generator ◽  
Performance Point ◽  
Hybrid Motor ◽  
Driving Torque

Analysis of the possibility of using an engine with a rotating piston as the propulsion of an electric generator in application to a motor glider propulsion The paper presents an analysis of the possibilities of application of a rotating piston engine (Wankel type) as a propulsion for an electric generator in the motor glider propulsion system. This generator would be a part of the propulsion system of a hybrid motor glider using the AOS 71 motor glider airframe. In the research, the rotational characteristics of the LCR 407ti engine were determined experimentally. Driving torque run, power and fuel consumption were determined as a function of engine speed. The obtained results are presented in diagrams. The conceptual diagram of the hybrid drive is presented. The current generator was selected and the effectiveness of the generator and the entire propulsion were assessed from the motor gliders performance point of view. On the basis of the conducted research, conclusions were drawn and there were indicated the objectives and directions of further research on hybrid propulsion with specific aerodynamic and mass limitations of the aircraft

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