Modern spark-ignition engines are knock-limited over a significant fraction of their operating map. The efficiency loss induced by knock mitigation depends on both the fuel octane quality and driving conditions. This paper quantifies relevance Research Octane Number (RON) Motor (MON) to losses (KLFEL) mid-size sports utility vehicle operated in several standard drive cycles. Index model, OI = (...

<div class="section abstract"><div class="htmlview paragraph">GTDI engines are becoming more efficient, whether individually or part of a HEV (Hybrid Electric Vehicle) powertrain. For the latter, this efficiency manifests itself as increase in zero emissions vehicle mileage. An ideal device for energy recovery is turbogenerator (TG), and, when placed downstream conventional turbine,...

A new model of women's sexual response moves the focus from spontaneous drive with its markers of sexual thoughts, fantasies, and conscious urge to be sexual to an inherently responsive cycle. The model reflects intimacy-based sexual motivation, processing of sexual stimuli to arousal, cognitive, and affective appraisal of that arousal. Sexual desire to continue the physical experience is acces...

In a laboratory environment, it is cost prohibitive to run automotive battery aging experiments across a wide range of possible ambient environment, drive cycle, and charging scenarios. Because worst-case scenarios drive the conservative sizing of electric-drive vehicle batteries, it is useful to understand how and why those scenarios arise and what design or control actions might be taken to m...

The development and implementation of a diesel engine combustion system simulation model is described. The model is a crank angle based combustion model, which uses the conditions in the intake and exhaust manifolds together with the fuel injection signal from the engine control unit to estimate the in-cylinder pressure throughout a complete combustion cycle. The model is implemented in Matlab....

We propose a model that generates an economic expansion following good news about future total factor productivity (TFP) or investmentspecific technical change. The model has three key elements: variable capital utilization, adjustment costs to investment, and preferences that exhibit a weak short-run wealth effect on the labor supply. These preferences nest, as special cases, the two classes o...