Simulation Study of Advanced Variable Displacement Engine Coupled to Power-Split Hydraulic Hybrid Powertrain

The simulation based investigation of the variable displacement engine is motivated by a desire to enable unthrottled operation at part load, and hence eliminate pumping losses. The mechanism modeled in this work is derived from a Hefley engine concept. Other salient features of the proposed engine are turbocharging and cylinder deactivation. The cylinder deactivation combined with variable displacement further expands the range of unthrottled operation, whereas turbocharging increases the power density of the engine and allows downsizing without the loss of performance. Although the proposed variable displacement turbocharged engine (VDTCE) concept enables operations in a very wide range, running near idle is impractical. Therefore, the VDTCE is integrated with a hybrid powertrain to mitigate issues with engine transients and mode transitions. The engine model is developed in AMESim using physics based models, such as thermodynamic cycle simulation, filling and emptying of manifolds, and turbulent flame entrainment combustion. A predictive model of the power-split hydraulic hybrid driveline is created in SIMULINK, thus facilitating integration with the engine. The integrated simulation tool is utilized to address design and control issues, before determining the fuel economy potential of the powertrain comprising a VDTCE engine and a hydraulic hybrid driveline.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/89879/1/draft_01.pd

Responsible of Socio-economic Factors with Addiction in Yazd: An Opinion Survey

Background: Addiction has a long history in Iran and it is one of the social problems that create psychological and social conflicts for addicts and their families. Addiction just like other social deviations affects young who are the most valuable assets of a nation. Recognition of socio-economic factors responsible for addiction can help planning and management of programs to fight against addiction. Methods: This cross-sectional study was conducted using a questionnaire on 261 spouses of addicts referring to the detoxification centers of Yazd, Iran who were selected randomly. Their perspectives regarding factors thought to be effective in addiction were examined. Statistical tests included chi-square and Kruskal-Wallis tests. Findings: Economic problems, divorce, marital problems, lack of familial supervision, unemployment, psychological and physical problems had a statistically significant relationship with the income of the family (P < 0.05), such that with an increase in income of the family these factors played a lesser significant role in addiction. Conclusion: Control of surrounding factors and increase in self-esteem are two important factors that can help effectively control addiction in the young population. After addiction, though environmental and surrounding factors play a role in preventing return to addiction, their role is reduced. Keywords: Addiction, Socio-economic factors, Spouse, Ira

8/28/2019: Course Change Form MECH 521

The Course Number is being changed from MECH-521 to MECH-421 since this is an undergraduate capstone course. Kettering University is eliminating 500 course numbers due to HLC concerns about our graduate program. Since our 500 level courses are defined as mezzanine they are not considered to be graduate courses by HLC. Changing the number makes sure that graduate students should not take an undergraduate capstone course

Responsible of Socio-economic Factors with Addiction in Yazd, Iran: An Opinion Survey

Abstract Background: Addiction has a long history in Iran and it is one of the social problems that create psychological and social conflicts for addicts and their families. Addiction just like other social deviations affects young who are the most valuable assets of a nation. Recognition of socio-economic factors responsible for addiction can help planning and management of programs to fight against addiction. Methods: This cross-sectional study was conducted using a questionnaire on 261 spouses of addicts referring to the detoxification centers of Yazd, Iran who were selected randomly. Their perspectives regarding factors thought to be effective in addiction were examined. Statistical tests included chi-square and Kruskal-Wallis tests. Findings: Economic problems, divorce, marital problems, lack of familial supervision, unemployment, psychological and physical problems had a statistically significant relationship with the income of the family (P < 0.05), such that with an increase in income of the family these factors played a lesser significant role in addiction. Conclusion: Control of surrounding factors and increase in self-esteem are two important factors that can help effectively control addiction in the young population. After addiction, though environmental and surrounding factors play a role in preventing return to addiction, their role is reduced. Keywords: Addiction, Socio-economic factors, Spouse, Ira