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Showing 1 to 17 of 17 for “"Intake Manifold"”.
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Intake Manifold Design for an Air Restricted Engine
… the effects that an air restriction has on basic intake manifold design calculations. When designing an intake manifold for a combustion engine, there are several simple methods that engineers have used historically to help determine peak volumetric efficiency per engine rpm. Methods such as …
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System Identification and State Estimation for Intake Manifold Charge Flow Temperature of a Compression Ignition Diesel Engine
<p>Intake manifold charge temperature is a factor used in mean value engine models (MVEMs) for the calculation of intake mass air charge and oxygen flow. More stringent emission requirements have led to increased deployment of more advanced engine combustion models onto production engine …
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Performance and emission characteristics of an automotive diesel engine using biodiesel fuel with the influence of air intake variables
… cylinder. The pressure drop across the air intake manifold is known to have a significant effect on the indicated power of the internal combustion engine. Most car manufacturers locate the air grill at the front of a vehicle to enhance the volumetric efficiency. However due to wading …
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Feed-Forward Air-Fuel Ratio Control during Transient Operation of an Alternative Fueled Engine
… is made a discrete amount of time before the intake valve opening. This gives the fuel time to vaporize in the intake runner before being inducted. Therefore, in order to achieve stoichiometric combustion, the amount of inducted air will have to be determined a discrete amount of time into the …
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Characterizing and designing engine manifolds for single-cylinder engine turbocharging
… (when the turbocharger is powered) and the intake stroke (when the engine requires the compressed air). This work explores overcoming the phase mismatch problem by adding an air capacitor: a volume added in series with the intake manifold between the turbocharger compressor and the engine …
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Intake flow analysis of a pulsed detonation engine
… and modified to explore unsteady flow within the intake system of a pulse detonation engine (PDE). Using a quasi-one-dimensional approach the program provides insight into the unsteady nature of localized equivalence ratios to include their effects on PDE performance. The original FORTRAN program …
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A methodology for turbocharging single cylinder four stroke internal combustion engines
… when the turbocharger is powered, and the intake stroke, when the engine intakes air, turbocharging is not used in commercial single cylinder engines. Single cylinder engines are ubiquitous in developing world off grid power applications such as tractors, generators, and water pumps due to …
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Development of a High Speed Data Acquisition System for Spark Ignition Engine
… because of the nature of the single cylinder intake manifold pressure. Therefore an engine model based on experimental data had to be developed. Using Matlab/ Simulink, xPC Target and data acquisition hardware a model of the single cylinder engine was developed. These models were developed by …
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Opposing effects of recirculated gases during cranking on cold start of diesel engines
… the cranking period are recycled back into the intake manifold using two different methods. In the first method the engine-out gases during cranking are recirculated into the intake manifold and their rate is controlled by a CGR (Cranking Gases Recirculation) valve, without applying any back …
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Low Temperature Combustion and Emissions of Diesel with Additions of N-Butanol in a Direct Injection Compression Engine
… an early injection of n-butanol in the intake manifold at the start of the intake stroke, followed by a conventional injection close to the compression top dead center. The results obtained show that NOx and soot emissions can be reduced with a slight reduction in fuel consumption. The …
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Predicting the behavior of a lean-burn hydrogen-enhanced engine concept
… of nitrogen oxides (NOx), while reduced intake manifold throttling minimizes pumping losses leading to higher efficiency. These benefits are offset by the reduced combustion speed of lean mixtures, which can lead to high cycle-to-cycle variation and unacceptable engine behavior …
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Dual fuel conversion of a direct-injection diesel engine
… Also, for the sake of simplicity, the method of intake manifold fumigation through an IMPCO, Inc. electronic natural gas control valve was chosen to deliver the CNG. A microprocessor-based electronic control unit was developed to manage the hydraulically-actuated, electronically-controlled unit …
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Mean-value modelling and robust control of the airpath of a turbocharged diesel engine.
… for this model using a gridding approach for the intake manifold pressure as scheduling variable. The designed controller is implemented on the engine in real-time. The experimental results are very promising and indicate that the quasi-LPV model captures the significant nonlinearities and …
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The effects of fuel evaporation on engine knock
… heat transfer processes that occur within the intake manifold of a spark-ignition engine. The primary aim of the project was to establish the temperature of the air/fuel mixture after the inlet process has been completed, and to identify how this temperature responds to changes in engine speed …
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Closed-loop, variable-valve-timing control of a controlled-auto-ignition engine
… transfer function at constant engine speed and intake manifold temperature. Since the mapping domain was limited, the open-loop controller did not compensate for changes in operating conditions. This controller was used to study the transient response of the engine. Using the transient data, a …
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Model-Based Control of Gasoline Partially Premixed Combustion
… because of its increased sensitivity to intake conditions, its decreased combustion-phasing controllability and its high pressure-rise rates related to premixed combustion, this puts higher demands on the engine control system. This thesis investigates model predictive control (MPC) of …