A Comprehensive Study of Propulsion Torque Distribution for a Parallel Hydraulic Hybrid Heavy Bus

2013 ◽  
Vol 365-366 ◽  
pp. 454-458
Author(s):  
Zhong Liang Zhang ◽  
Jie Chen
Keyword(s):  
Fuel Economy ◽  
Low Energy ◽  
Optimal Operating ◽  
Torque Distribution ◽  
Operating Line ◽  
Distribution Strategy ◽  
Hydraulic Hybrid ◽  
Frequent Switching ◽  
Urban Bus ◽  
Comprehensive Study

The purpose of this paper is to improve the fuel economy of a parallel hydraulic hybrid heavy bus. And an optimal distribution strategy of the propulsion torque was proposed based on engine working points of the conventional bus. The universal characteristics map of the engine was divided into three zones by the optimal operating line and the fuel contour CBF. The results indicated this strategy can not only overcome the low energy density disadvantage of the accumulator but also prohibit frequent switching between the engine and the pump/motor. The HHP can provide most of the required torque and make most working points of the engine around or on the optimal operating line. When the value of the fuel contour CBF is 213g/kw.h, the bus has the minimal fuel consumption in the typical urban bus cycle and the fuel economy of the engine improves 24.8% compared to the conventional bus.

Research on Torque Distribution Strategy for ISG Hybrid Electric Cars

2012 ◽  
Vol 546-547 ◽  
pp. 212-217
Author(s):  
Xu Dong Wang ◽  
Hai Xing Zhang ◽  
Shu Cai Yang ◽  
Yong Qin Zhou ◽  
Jin Fa Liu
Keyword(s):  
Hybrid System ◽  
Fuel Economy ◽  
Test Model ◽  
Torque Distribution ◽  
Electric Cars ◽  
Distribution Strategy ◽  
Hybrid Car ◽  
Total Vehicle ◽  
Hybrid Electric ◽  
Minimum Work

Based on the configuration and working state analysis of the ISG hybrid electric cars, the torque distribution strategy of a hybrid system is designed to delineate the maximum and minimum work torque curves of the engine, achieve optimization of engine’s range so as to make sure the target torque of the engine and ISG motor, and finally through the calibrated driving characteristics MAP and battery SOC state to achieve the calculation of total vehicle torque demand. Taking the Hafei Saibao ISG hybrid car as a test model, the test of fuel economy and emissions carried out under specific conditions showed that using the torque distribution strategy has increased by 12.8 % of the ISG hybrid car fuel economy and improved emissions performance to some extent compared to the traditional Hafei Saibao cars.

Fabrication of the narrow size nano curcuminoids emulsion by combining phase inversion temperature and ultrasonication: preparation and bioactivity

2021 ◽  
Author(s):  
Quang Hieu Tran ◽  
Thuy Thanh Ho ◽  
Tu Thanh Nguyen
Keyword(s):  
Energy Method ◽  
Phase Inversion ◽  
Curcuma Longa ◽  
High Energy ◽  
Low Energy ◽  
Inversion Temperature ◽  
Comprehensive Study ◽  
Phase Inversion Temperature

A comprehensive study from Curcuma longa to powder nano curcuminoids has been carried out. Combining of both low energy method (Phase Inversion Temperature) and high-energy method (Ultrasonication), a series of...

Vehicle Stability Control Through Predictive and Optimal Tire Saturation Management

2012 ◽  
Author(s):  
Justin Sill ◽  
Beshah Ayalew
Keyword(s):  
Stability Control ◽  
Vehicle Stability ◽  
Distribution Problem ◽  
Scale Separation ◽  
Torque Distribution ◽  
Hydraulic Hybrid ◽  
Time Scale Separation ◽  
Vehicle Stability Control ◽  
Natural Time ◽  
Set Up

This paper presents a predictive vehicle stability control (VSC) strategy that distributes the drive/braking torques to each wheel of the vehicle based on the optimal exploitation of the available traction capability for each tire. To this end, tire saturation levels are defined as the deficiency of a tire to generate a force that linearly increases with the relevant slip quantities. These saturation levels are then used to set up an optimization objective for a torque distribution problem within a novel cascade control structure that exploits the natural time scale separation of the slower lateral handling dynamics of the vehicle from the relatively faster rotational dynamics of the wheel/tire. The envisaged application of the proposed vehicle stability strategy is for vehicles with advanced and emerging pure electric, hybrid electric or hydraulic hybrid power trains featuring independent wheel drives. The developed predictive control strategy is evaluated for, a two-axle truck featuring such an independent drive system and subjected to a transient handling maneuver.

Design of Torque Distribution Strategy for Four-Wheel-Independent-Drive Electric Vehicle

2020 ◽  
Vol 54 (6) ◽  
pp. 501-512
Author(s):  
Chuanwei Zhang ◽  
Rongbo Zhang ◽  
Rui Wang ◽  
Bo Chang ◽  
Jian Ma
Keyword(s):  
Electric Vehicle ◽  
Torque Distribution ◽  
Distribution Strategy

Comprehensive study of the response of inexpensive low energy wireless sensors for traffic noise monitoring

2020 ◽  
Vol 169 ◽  
pp. 107451 ◽  
Author(s):  
Shadman Sadik Marouf ◽  
Margaret Carol Bell ◽  
Paul Stuart Goodman ◽  
James Neasham ◽  
Jeffery Neasham ◽  
...  
Keyword(s):  
Wireless Sensors ◽  
Traffic Noise ◽  
Low Energy ◽  
Comprehensive Study

scholarly journals Λp correlated production from low energy K−12C interactions by AMADEUS

2019 ◽  
Vol 199 ◽  
pp. 03010
Author(s):  
R. Del Grande ◽  
M. Bazzi ◽  
G. Belloti ◽  
A. M. Bragadireanu ◽  
D. Bosnar ◽  
...  
Keyword(s):  
Cross Sections ◽  
Branching Ratios ◽  
Low Energy ◽  
Final State ◽  
Comprehensive Study ◽  
Integrated Luminosity

The main steps for the analysis of the Λp correlated production in low-energy K− captures on Carbon nuclei, performed by the AMADEUS collaboration, are presented. The goal is to perform the first comprehensive study of the K− absorption on two, three and four nucleons, exploiting the lowmomentum K−s (pK ~ 127 MeV/c) produced at the DAΦNE collider, and to measure the low-energy cross sections and branching ratios of the K− multinucleon absorption processes in both the Λp and Σ0p channels. An integrated luminosity of 1.74 fb−1 collected during the KLOE 2004/2005 data campaign is analysed by reconstructing the Λp final state.

scholarly journals OPTIMIZATION OF A PASSENGER HYDRAULIC HYBRID VEHICLE TO IMPROVE FUEL ECONOMY

2008 ◽  
Vol 2008 (7-1) ◽  
pp. 143-148 ◽  
Author(s):  
Kim A. STELSON ◽  
Jonathan J. MEYER ◽  
Andrew G. ALLEYNE ◽  
Brandon HENCEY
Keyword(s):  
Fuel Economy ◽  
Hybrid Vehicle ◽  
Improve Fuel Economy ◽  
Hydraulic Hybrid ◽  
Hydraulic Hybrid Vehicle
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