This study estimates the range of fuel and emissions impacts of an automated-vehicle (AV)-based transit system that services campus-based developments, termed an automated mobility district (AMD). The study develops a framework to quantify the fuel consumption and greenhouse gas (GHG) emission impacts of a transit system comprised of AVs, taking into consideration average vehicle fleet composit...

In order to use gaseous fuels in Diesel Engines, Dual-Fuel Diesel Engine (D. F. D. E) the pilot injection approach is chosen. To predict its performance, an engine cycle model, based on limited-pressure Diesel cycle, is constructed. The model predicts D. F. D. E performance with LPG, and CNG gases. Comparing with pure Diesel engine, by increasing gas proportion in dual-fuel, indicated power and...

Annual use, utilization, productivity and fuel consumption of three purpose-built and three excavator-based harvesters and processors were monitored for one work year. All machines were owned and operated by private contractors and were representative of the Italian machine fleet. Despite challenging mountain terrain, annual use ranged from 675 to 1525 h per year, and production from 3200 to 27...

The adaptive power management strategy is developed for a four-mode plug-in hybrid electric vehicle in this paper. For a given driving pattern, dynamic programming is employed to obtain the global optimum as the performance upper bound to benchmark the proposed strategy. A selforganizing fuzzy controller is used to adaptively adjust the equivalence factor for converting the electric power usage...

This paper presents automatic fuel consumption optimization with simultaneous keeping the recommended vehicle’s speed. These tasks are closely related since a simple minimization of fuel consumption leads to stopping a vehicle. The proposed “double” optimization is performed online using combination of two controllers. The first of them is based on fully probabilistic design (FPD) under Bayesia...

1 2 6 12 18 24 36 42 44 48 50 52 54 56 58 61 Summary Report overview 1. Recent trends in average fuel consumption for new cars 2. How great is the technical potential to reduce new car fuel consumption by 2020 and by 2030? 3. The critical distinction between the technical potential to improve fuel economy and how much of that technical potential is realized 4. Policies to encourage the producti...

in spark ignition (si) engines, the accurate control of air fuel ratio (afr) in the stoichiometric value is required to reduce emission and fuel consumption. the wide operating range, the inherent nonlinearities and the modeling uncertainties of the engine system are the main difficulties arising in the design of afr controller. in this paper, an optimization-based nonlinear control law is anal...

one of the methods to reduce the emissions in a diesel engine is by oxygen introduction into the combustion chamber which can be done by supplying the oxygen into the inlet manifold during suction stroke. oxygen affects different parameters such as brake thermal efficiency, fuel consumption, nox and smoke at different load conditions. load test was conducted for various concentrations of oxygen...

Automotive emission is becoming a critical threat to today’s human health. Many researchers are studying engine designs leading to less fuel consumption. Gearbox selection plays a key role in an engine design. In this study, Taguchi quality engineering method is employed, and optimum gear ratios in a five speed gear box is obtained. A table of various gear ratios is suggested by design o...