scholarly journals Turbocompound Power Unit Modelling for a Supercapacitor-Based Series Hybrid Vehicle Application

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 447
Author(s):  
Matteo Repetto ◽  
Massimiliano Passalacqua ◽  
Luis Vaccaro ◽  
Mario Marchesoni ◽  
Alessandro Pini Prato
Keyword(s):  
Diesel Engine ◽  
Power Unit ◽  
Fuel Economy ◽  
Hybrid Vehicle ◽  
Efficiency Improvement ◽  
Technical Literature ◽  
Turbocharged Diesel Engine ◽  
Conventional Vehicle ◽  
Efficiency Increase ◽  
Efficiency Map

In this paper, starting from the measurements available for a 2000 cm3 turbocharged diesel engine, an analytical model of the turbocharger is proposed and validated. The model is then used to extrapolate the efficiency of a power unit with a diesel engine combined with a turbocompound system. The obtained efficiency map is used to evaluate the fuel economy of a supercapacitor-based series hybrid vehicle equipped with the turbocompound power unit. The turbocompound model, in accordance with the studies available in the technical literature, shows that the advantages (in terms of efficiency increase) are significant at high loads. For this reason, turbocompound introduction allows a significant efficiency improvement in a series hybrid vehicle, where the engine always works at high-load. The fuel economy of the proposed vehicle is compared with other hybrid and conventional vehicle configurations.

Fuel Efficiency Comparison Between a Conventional and a Hybrid Vehicle Using a Model Based on MATLAB/Simulink and ADAMS

2008 ◽  
Author(s):  
Brian S. Fan ◽  
Amir Khajepour ◽  
Mehrdad Kazerani
Keyword(s):  
Fuel Economy ◽  
Model Simulation ◽  
Hybrid Vehicle ◽  
Published Data ◽  
Simulation Platform ◽  
Vehicle Model ◽  
Control Logic ◽  
Matlab Simulink ◽  
Conventional Vehicle ◽  
Fuel Economy Improvement

Recent development of hybrid vehicles in the automotive industry has demonstrated the capability of reducing fuel consumption while maintaining vehicle performance. The purpose of this paper is to present a hybrid vehicle model created in MATLAB and ADAMS, and its fuel economy improvement over a conventional vehicle system. The hybrid vehicle model discussed in this paper utilizes the Honda IMA (Integrated Motor Assist) architecture. The powertrain components’ power output calculation and the control logic were modeled in MATLAB/Simulink, while the mechanical inertial components were modeled in ADAMS. Communication between MATLAB and ADAMS was established by ADAMS/Controls. The vehicle model created using MATLAB and ADAMS provides a more accurate, more realistic, and a highly flexible simulation platform. In order to evaluate the accuracy of the MATLAB/ADAMS hybrid vehicle model, simulation results were compared to the published data of ADVISOR. Fuel economy of hybrid and conventional vehicle models were compared using the EPA New York City Cycle (NYCC) and the Highway Fuel Economy Cycle (HWFET). The hybrid vehicle demonstrated 8.9% and 14.3% fuel economy improvement over the conventional vehicle model for the NYCC and HWFET drive cycles, respectively. The MATLAB/ADAMS vehicle model presented in this paper, demonstrated the fuel economy advantage of the hybrid vehicle over the conventional vehicle model, while offering a simulation platform that is modular, flexible, and can be conveniently modified to create different types of vehicle models.

Analysis of Engine Performance Parameters of Electrically Assisted Turbocharged Diesel Engine

2015 ◽  
Vol 799-800 ◽  
pp. 861-864
Author(s):  
Tayfun Özgür ◽  
Kadir Aydın
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Fuel Economy ◽  
Engine Performance ◽  
Performance Parameters ◽  
Turbocharged Diesel Engine ◽  
Charging System ◽  
Electrically Assisted ◽  
Turbocharging System ◽  
Exhaust Energy

Charging system is used to increase the charge density. Supercharging system suffers from fuel consumption penalty because of compressor powered by engine output. Turbocharging system uses wasted exhaust energy that means compressor powered by exhaust turbine but has a turbo lag problem. The electrically assisted turbocharger which can eliminate turbo lag problem and fuel consumption penalty is the topic of this paper. The purpose of this paper is to analyze the effect of electrically assisted turbocharger on diesel engine performance parameters. The AVL Boost software program was used to simulate the electrically assisted turbocharged diesel engine. Simulations results showed that electrically assisted turbocharger increases low end torque and improves fuel economy.

scholarly journals Different Rule-based Control Schemes for a Series Hydraulic Hybrid Vehicle

2016 ◽  
Vol 3 (1) ◽  
pp. 101
Author(s):  
Tri-Vien Vu
Keyword(s):  
Fuel Economy ◽  
Hybrid Vehicle ◽  
Power Source ◽  
Rule Based ◽  
Conventional Vehicle ◽  
Hydraulic Hybrid ◽  
Short Period ◽  
Control Schemes ◽  
Hydraulic Hybrid Vehicle ◽  
The Difference

In a hybrid hydraulic vehicle, the hydraulic accumulator is used as the secondary power source in addition to the engine to propel the vehicle. Since the accumulator is a passive power source, it will be only used to compensate the difference between the power demand and the power delivery by the engine. Obviously, the main energy consumption is the engine. Hence a straightforward strategy to improve the fuel economy is to reduce the engine operating period. In contrast, because of the low energy density characteristic, the accumulator can only afford the required power in a short period. As a consequence, the hydraulic hybrid vehicle has been concluded only suitable for start-stop-and-go driving pattern. This paper present different rule-based control schemes for a 3.5- ton series hydraulic hybrid truck. The simulation results indicate that by applying suitable control scheme, the proposed series hydraulic hybrid system offers improvements of fuel economy for both urban and highway driving condition. The improvement is of 42.67% and 36.56% for urban and highway driving conditions, respectively in comparison with the corresponding conventional vehicle.

scholarly journals The effect of diesel knock on a turbocharged diesel engine emissions and top compression ring friction

2021 ◽  
Vol 349 ◽  
pp. 04006
Author(s):  
Anastasios Zavos ◽  
Pantelis G. Nikolakopoulos ◽  
Apostolos Pesyridis ◽  
Alasdair Cairns
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Significant Contribution ◽  
Gasoline Engine ◽  
Direct Injection ◽  
Engine Emissions ◽  
Turbocharged Diesel Engine ◽  
Compression Ring ◽  
Multi Phase Flow ◽  
Multi Phase

Turbocharged engines with direct injection offer a significant contribution to engine downsizing technology. However, there remain many unsolved and ambitious issues concerning knocking and pre-ignition. Therefore, detailed understanding of the top compression ring lubrication and fuel economy is critical. This paper focuses on the tribological performance of the top compression ring under partially lubricated conditions caused by diesel knock in a turbocharged diesel engine. A mixed-hydrodynamics model was built including multi-phase flow and asperity interactions with realistic boundary conditions. The study shows that frictional power losses in the compression ring-liner contact increased owing to diesel knock and starved conditions in a turbocharged gasoline engine. This finding indicates that the control of knocking combined with the inlet flow conditions can help to mitigate fuel economy and emissions in ring-liner conjunction.

scholarly journals Enhancing the fuel economy of a plug-in series hybrid vehicle system

2019 ◽  
Vol 23 (1) ◽  
pp. 130-137
Author(s):  
Hussein Awad Kurdi Saad
Keyword(s):  
Output Power ◽  
Fuel Economy ◽  
Hybrid Vehicle ◽  
Conventional Vehicle ◽  
Hybrid Car ◽  
Vehicle System ◽  
Driving Model ◽  
In Series

Abstract In this paper, the design and simulation of a hybrid vehicle with a fully functional driving model is presented. Actual velocities and desired velocities are compared and matched to get the optimum values of a vehicle. Fuel economy is calculated to get miles per gallon gasoline equivalent (MPGe). The MPGe for a hybrid vehicle is compared with the MPGe for a conventional vehicle to get the best MPGe in a hybrid car. A higher performance of output power of a vehicle is obtained.

scholarly journals Model based calibration for improving fuel economy of a turbocharged diesel engine

2018 ◽  
Vol 22 (3) ◽  
pp. 1259-1270
Author(s):  
Qiangqiang Zeng ◽  
Bolan Liu ◽  
Xiaochen Shi ◽  
Chao Zhang ◽  
Jingchao Hu
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Turbocharged Diesel Engine ◽  
Model Based
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