To reveal the potential and means of energy saving and emission reduction for the parallel pneumatic hybrid vehicle (PHV) proposed in this article, the comparison analysis between parallel PHV and conventional diesel vehicle (CDV) was made on the dive cycles of NEDC, UDDS, HWFET and JAPAN10-15 using the mathematic model. The results show: For the drive cycles of NEDC, UDDS, HWFET and JAPAN10-15, the PHV could decrease emissions by 58.84%, 38.76%, 14.54%, and 66.59% and save energy by 13.12%, 14.06%, -6.27% and 28.06% respectively com-pared to the CDV; Of the five hybrid means of shutting down the ICE at idle, regenerative braking, optimizing working area of ICE, using the exhaust heat of ICE and downsizing ICE, using the ex-haust heat of ICE along with shutting down the ICE at idle have the most impact on energy saving, and then is the downsizing ICE, but using exhaust heat would increase energy consumption; Opti-mizing working area of ICE and shutting down the ICE at idle have the greatest contribution to re-duction emissions, followed is also downsizing ICE. The efficiency of regenerative braking is very low, as well as the heat exchange efficiency of the adopted heat exchanger, requiring further opti-mization and design.
With the increase of product data, it is one of the key problems if the existing resources can be ordered and reused rapidly. Focusing on the technical objects, the framework of ordering system is proposed for the technical objects based on meta object facility. The framework of ordering system includes four layers such as the layer of technical objects, models, meta-models and meta-meta-models. The description of each layer is analyzed in detail which set forth the ordering structure, the elemental composition and the relations of elements. The application indicates that the ordering system of technical objects realizes the reusing of existing objects, improves the efficiency of enterprise personnel. It is the guide of implementation for information in future.
In order to reuse existing resources effectively and meet the specific demands of different users, it is necessary to study the classification modeling methods of parts for guiding product design and improving product quality. Firstly, the hierarchy theories of classification modeling are analyzed based on Design Structure Matrix (DSM). Then, the process of classification modeling is presented for parts of complex machinery product based on DSM modeling method. Meanwhile, the steps and notes to build classification structure were described in details. The results show that the theories and methods presented in this article could provid guidances for classification modeling of parts and realize efficient reuse and quick retrieval of product data for complex machinery manufactories.
To improve the performances of air-powered engine (APE) used on the pneumatic and its hybrid vehicles, the electronic control system of APE was developed based on the single-chip microcontroller. The design process of hardware and software subsystem of the electronic control system was put forward according to the characteristics of APE and the resources of XC886 chip. The evaluation test was conducted to validate the electronic control system of APE. The experimental results show the control system can function well under any given conditions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.