Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 48 for “"engine control"”.
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Automotive engine control : a linear quadratic approach
… Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1980.
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Engine Control Unit for a 4 cylinder motorcycle engine
An Engine control unit (ECU) is a component found in all modern vehicles. In the case of a competition vehicle, the variety of ECUs decrease massively. especially if the vehicle is constructed for the purpose of competing in an international competition, because of various rules and regulations …
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Applicability of hybrid methods in engine control system design
The new control techniques of off-line model predictive control and level set methods have been applied to the challenges of engine management for diesel exhaust aftertreatment. Theoretical work has been supported by experiments carried out in a diesel engine test cell. A control relevant air-path …
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Ionization In Diesel Combustion For On-Board Diagnostics And Engine Control
<p>Diesel engines have been known for their high thermal efficiency and specific power output, but there is concern about engine-out NOx and particulate matter emissions. To meet the current emission standards, advanced diesel engines are fitted with electronically controlled fuel injection systems …
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Improving gas turbine engine control system component optimization by delaying decisions
Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2003.
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Behavior of fresh and aged catalysts in response to rapid engine control perturbations
… Institute of Technology, Dept. of Mechanical Engineering, 2002.
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System theoretic framework for assuring safety and dependability of highly integrated aero engine control systems
… of complex, safety-critical systems for aero-engine control is subject to the, often competing, demands for higher safety and reduced development cost. Although the commercial aerospace industry has a general good safety record, and has placed much emphasis on process improvement within a …
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Neural network control of nonstrict feedback and nonaffine nonlinear discrete-time systems with application to engine control
… functions in the system equations, unknown control inputs, and cost functions for two different classes of nonlinear discrete-time systems. Employing NN in closed-loop feedback systems requires that weight update algorithms be stable...Controllers are developed and applied to a nonlinear, …
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Stability and Performance of Propulsion Control Systems with Distributed Control Architectures and Failures
Future aircraft engine control systems will be based on a distributed architecture, in which, the sensors and actuators will be connected to the Full Authority Digital Engine Control (FADEC) through an engine area network. Distributed engine control architecture will allow the implementation of …
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Engine modelling for virtual mapping. Development of a physics based cycle-by-cycle virtual engine that can be used for cyclic engine mapping applications, engine flow modelling, ECU calibration, real-time engine control or vehicle simulation studies.
After undergoing a study about current engine modelling and mapping approaches as well as the engine modelling requirements for different applications, a major problem found to be present is the extensive and time consuming mapping procedure that every engine has to go through so that all control …
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Data-Rich Multivariable Control of Heavy-Duty Engines
The combustion engine is today the dominant technology for transportation of goods and people world-wide. Concerns for global warming, toxic exhaust emissions, as well as cost and availability of fuel have in recent years created incentives for technological evolution of combustion engines. More …
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Implementation of a fully variable valve actuation valvetrain
… Laboratory's (SAFL) single cylinder research engine was not in line with the current engine technologies, in particular Fully Variable Valve Actuation (FVVA). This project represented the first stage of the engine upgrade, which was to modify the current single cylinder engine to interface …
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Effect of fuel properties on the first cycle fuel delivery in a Port Fuel Injected Spark Ignition Engine
… a Port Fuel Injected (PFI) Spark Ignition (SI) engine. Cold intake port wall and valve temperatures, near-atmospheric manifold pressure, and low port air velocity combine to create an adverse environment for fuel delivery - the process of injecting and vaporizing liquid fuel to create a …
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Optimizing diesel engine efficiency using the controllability of a variable ratio hydrostatic transmission
"A linear mathematical model of a diesel engine, hydrostatic transmission, and electric dynamometer system was developed. This model was used as an aid in designing a single input controller which regulates engine speed to optimize efficiency while maintaining constant transmission output speed …
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L1 Adaptive Control of Uncertain Nonlinear Systems with Dynamic Constraints: As Applied to Commercial Aircraft Engines
<p>L1 adaptive control for a turbofan commercial aircraft engine is developed and applied in the presences of constraint limits. Turbofan engines are a highly complex system, with a wide variety of dynamics, operating under constantly changing environmental conditions. In aircraft turbofan …
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Design of a pneumatically assisted shifting system for Formula SAE® racing applications
… through buttons on the steering wheel and controlled through the car's engine control processor. An ergonomic clutch was also designed in order to help shift more easily and provide more control of the vehicle. This document describes, from beginning to end, the design process involved in …
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Stability of linear autonomous systems under regular switching sequences
… Muller automaton. This system arises in various engineering problems such as distributed communication and automotive engine control. The asymptotic stability of this system, referred to as regular asymptotic stability, generalizes two well-known definitions of stability of autonomous …
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Investigation of combustion and emission characteristics of a diesel engine fueled with butanol-diesel blends
… and emission characteristics of diesel engine running on butanol-diesel blends. The blending ratio of butanol to diesel was varied from 0 to 40 vol% using an increment of 10 vol%, and each blend was tested on a 2.7 L V6 common rail direction injection diesel engine equipped with an EGR …
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Control Structures for Low-Emission Combustion in Multi-Cylinder Engines
Traditionally, heavy-duty diesel engines have high efficiencies but also high emissions of NOx and soot particles. New engine concepts show the potential to retain diesel-like efficiencies while reducing emissions by forming a completely or partially homogeneous mixture of fuel and air prior to …
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