Last edited by Grolmaran
Saturday, May 16, 2020 | History

3 edition of Performance and combustion characteristics of direct-injection stratified-charge rotary engines found in the catalog.

Performance and combustion characteristics of direct-injection stratified-charge rotary engines

Hung Lee Nguyen

Performance and combustion characteristics of direct-injection stratified-charge rotary engines

by Hung Lee Nguyen

  • 224 Want to read
  • 4 Currently reading

Published by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Stratified charge engines.,
  • Wankel engine.,
  • Internal combustion engines.

  • Edition Notes

    StatementHung Lee Nguyen.
    SeriesNASA technical memorandum -- 100134.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL14662248M

    Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector.. All diesel engines use fuel injection by design. Petrol engines can use gasoline direct injection, where the fuel is directly delivered into the combustion chamber, or indirect injection where the fuel is mixed with air before the intake stroke. such engines. In this paper, these issues are considered in detail for Direct Injection Stratified Charge (DISC) engines, see Figure 1. These spark ignited engines hold a significant promise for fuel economy improvements. In particular, their capability of extended lean op-eration provides significant pumping loss reduction and thermody-File Size: 98KB.

    Challenges and Advantages of Stratified Combustion in Gasoline Direct-Injected Engines ANDERS N. JOHANSSON Department of Applied Mechanics Chalmers University of Technology Abstract The modern world is based on an extensive transport network in which passenger vehicles play a major by: 1. The stratified charge engine The principle of stratified charge applies to direct injection petrol engines. It involves concentrating spraying of the fuel close to the spark plug rather than throughout the whole of the combustion chamber. This method of operation delivers a reduction in fuel consumptionthat can reach 40% when the engine is runningFile Size: 80KB.

    Over more than 50 years, many disadvantages of the Wankel engine have been eliminated or improved. There are vast literature sources related to this development effort, concentrated on combustion chamber geometry [9,10], direct injection and stratified charge [11,12], port geometry [13,14], and sealing [], Wankel engine has the potential to be applied in areas where Author: Osman Akin Kutlar, Fatih Malkaz. A brief historical literature survey of the stratified charge engine concept is first presented. Selected stratified charge engine designs are then presented which represent the varied methods devised to achieve stratified charge combustion. Advantages and disadvantages of the stratified charge concept are then by: 4.


Share this book
You might also like
Sourcebook

Sourcebook

Helping the Child to Listen and Talk

Helping the Child to Listen and Talk

Viscount Milner

Viscount Milner

Westermans of Westphalia, Missouri

Westermans of Westphalia, Missouri

Shaking table tests on piles

Shaking table tests on piles

Une femme témoin de son siècle, Germaine de Staël.

Une femme témoin de son siècle, Germaine de Staël.

1662 Royal Brevier Prayer Book with Hymns Ancient and Modern Revised Red hardback, 5920 RE

1662 Royal Brevier Prayer Book with Hymns Ancient and Modern Revised Red hardback, 5920 RE

Pediatric respiratory disease in Vermont

Pediatric respiratory disease in Vermont

The letters to the Galatians and Ephesians

The letters to the Galatians and Ephesians

Asja Handbook

Asja Handbook

Tradition and modernity in furnishing.

Tradition and modernity in furnishing.

Tables for renewing and purchasing of the leases of cathedral-churches and colleges

Tables for renewing and purchasing of the leases of cathedral-churches and colleges

Ski

Ski

Performance and combustion characteristics of direct-injection stratified-charge rotary engines by Hung Lee Nguyen Download PDF EPUB FB2

PERFORMANCE AND COMBUSTION CHARACTERISTICS OF DIRECT-INJECTION STRATIFIED-CHARGE ROTARY ENGINES Hung Lee Nguyen National Aeronautics and Space Administration Lewi s Research Center Cleveland, Ohio SUMMARY Computer simulations of the direct-injection stratified-charge (DISC)File Size: 1MB.

Get this from a library. Performance and combustion characteristics of direct-injection stratified-charge rotary engines. [Hung Lee Nguyen; United States. National Aeronautics and. A zero-dimensional thermodynamic performance computer model for direct-injection stratified-charge rotary combustion engines was modified and run for a single rotor supercharged engine.

Operating conditions for the computer runs were a single boost pressure and a matrix of speeds, loads and engine Size: 1MB.

Projections of fuel economies as a function of emission standards for several stratified-charge engines are listed in Table values shown are relative to a good engine that meets standards of ,15, and for HC, CO, and NO x, gh Table XII does not give the size of automobile for which the comparisons are made, it is probably in the to.

Scheme of charge propagation. Using the CAD program a mode of charge stratification of ultra – lean combustion was elaborated based on considering the shape of the concave bowl of the piston and injection castor angle presented in Fig The small spheric bowl in the piston shown in Fig.1 works as a chamber and is located on the side of the inlet by: 4.

In principle, direct injection in gasoline engines can be implemented using two different operating modes/strategies: homogeneous operation and stratified-charge operation ().In the higher load range, an engine in which fuel injection occurs during the intake stroke and which therefore has a homogeneous mixture composition is operated in a similar way to a gasoline engine with Cited by: 3.

A Direct Injection Stratified Charge Rotary Engine (DISC-RE) with a pilot flame ignition system which has high ignition energy, large flame contact area and long duration of ignition source, has been examined comparing with a spark ignition system, using a model combustion chamber simulating a by: 2.

A stratified charge engine describes a certain type of internal combustion engine, usually spark ignition (SI) engine that can be used in trucks, automobiles, portable and stationary term "stratified charge" refers to the working fluids and fuel vapors entering the cylinder. Usually the fuel is injected into the cylinder or enters as a fuel rich vapor where a.

A new stratified charge system has been developed for direct injection gasoline engines. The special feature of this system is employment of a thin fan-shaped fuel spray formed by a slit nozzle and a shell-shaped piston cavity. This system, basically classified into the wall-guided mixture preparatiCited by: Book Description: In this research, combustion characteristics of ethanol/ gasoline blends in direct injection stratified charge Engine were carried out using a A comprehensive computer simulation has been developed to predict the performance of a direct-injection stratified-charge rotary combustion engine by means of the.

@article{osti_, title = {Development of a natural gas stratified charge rotary engine}, author = {Sierens, R. and Verdonck, W.}, abstractNote = {A water model has been used to determine the positions of separate inlet ports for a natural gas, stratified charge rotary engine.

The flow inside the combustion chamber (mainly during the induction period) has been. Stratified-charge combustion in rotary engines was studied using a three-dimensional model to compute intake, compression, liquid fuel injection, combustion, expansion, and exhaust. The model was applied to two engines of different displacement and at seven operating conditions.

Good agreement is. Downloadable (with restrictions). Experiments were conducted on a single-cylinder, four-stroke, water cooled, stratified-charge DISI (direct injection spark ignition) methanol engine which was modified from a diesel engine.

The effects of compression ratio on the torque, power, brake thermal efficiency and exhaust emissions of a DISI stratified-charge methanol engine were Cited by: This paper intends to study the combustion, performance and emission characteristics of the HCCI-DI engine with waste cooking oil (WCO) biodiesel as.

The rotary engine of the Wankel type is currently undergoing a renaissance in the combustion engine industry, mainly because of the simplicity of its design and high power to weight ratio.

Strong reliability increases the demand in the aero industry where it is used mainly in small aircrafts such as drones. In the engine development process, there is a high demand for 1 Author: Milan Drbal, David Svida.

Keywords: Simulation, Engine, Natural Gas, Direct Injection, Stratified Charge. hardware development optimization, saving cost and Introduction With increasing concerns about the harmful effects of conventional fossil fuel emissions, such as those from gasoline and diesel fuel, natural gas has.

direct injection spark ignition (DISI) Wankel rotary engine1 at rpm using diesel fuel. Compared to reciprocating type engines rotary engines have higher power to weight ratio. They are mechanically simple, less vibrate and achieve better performance at high rpm2, 3 and Several port fuel injected rotary engines can be found in the industry.

The Wankel engine is a type of internal combustion engine using an eccentric rotary design to convert pressure into rotating motion. All parts rotate in one direction, as opposed to the common reciprocating piston engine, which has pistons instantly and rapidly changing direction degrees. In contrast to the reciprocating piston designs, the Wankel engine delivers.

Comparison of performance of a direct-injection stratifiedcharge (DISC) engine with a spark ignition engine using a simplified model [66] The direct-injection stratified-charge (DISC) engine is Author: Yousef Najjar. Regressed relations for forced convection heat transfer in a direct injection stratified charge rotary engine (SAE) [Chi M Lee] on *FREE* shipping on qualifying : Chi M Lee.

Define stratified charge engine. stratified charge engine synonyms, stratified charge engine pronunciation, stratified charge engine translation, English dictionary definition of stratified charge engine. Injector Fouling and Its Impact on Engine Emissions and Spray Characteristics in Gasoline Direct Injection Engines.

were added to the.Abstract. Cyclic variations of stratified-charge turbulent combustion in direct injection gasoline engine can be simulated over ten continuous cycles based on the multi-level formation for the compressible Navier–Stokes equation and also a spray by: 3.A numerical simulation model has been developed to predict the direct-injection stratified charge combustion in a constant-volume vessel.

Important factors such as focal fuel concentrations, their fluctuations and turbulent flow characteristics were measured throughout the Author: Kyu Hoon Choi, Yasuhiro Daisho, Takeshi Saito.