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Friday, May 15, 2020 | History

2 edition of computer-controlled poppet-valve actuation system for application on research engines found in the catalog.

computer-controlled poppet-valve actuation system for application on research engines

R. M. Richman

computer-controlled poppet-valve actuation system for application on research engines

by R. M. Richman

  • 341 Want to read
  • 9 Currently reading

Published by Society of Automotive Engineers in Warrendale, Pa .
Written in English


Edition Notes

On title page: International Congress & Exposition, Detroit, Michigan, February 27- March 2, 1984.

StatementR. M. Richman and W. C. Reynolds.
SeriesTechnical paper series / Society of Automotive Engineers
ContributionsReynolds, W. C., Society of Automotive Engineers.
The Physical Object
Pagination8p. :
ID Numbers
Open LibraryOL14469139M

Other articles where Poppet valve is discussed: valve: On gasoline engines, poppet valves are used to control the admission and rejection of the intake and exhaust gases to the cylinders. In the Figure (right centre), the valve, which consists of a disk with a tapered edge attached to . POPPET VALVE A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide. In most applications a pressure differential helps to seal the valve and in some applications also open it.

The electronic valve actuation helps to vary the valve timings infinitely in internal combustion engines which provide desired open and close intervals of intake and exhaust valves at variable engine speeds. Once the valve timings are perfected, it leads to reduced fuel consumption and greater engine efficiency. Compact Air Valve -- ESO-2* from Clippard. The compact ES valve, like Clippard EV and ET valves, converts low voltage, low current signals into high pressure ( psig) pneumatic outputs, utilizing a unique, patented, valving principle.

SYSTEM MODELING AND CONTROL DESIGN OF A TWO-STAGE METERING POPPET-VALVE SYSTEM A Dissertation presented to the Faculty of the Graduate School University of Missouri-Columbia In Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy by YAMIN LUO Dr. Noah Manring, Dissertation Supervisor MAY   Appeared in Steel Times International in the July/August issue. US-based Hunt Valve, a company with decades of experience in the field of fluid power engineering solutions, has introduced a new poppet valve for descaling applications that it claims will last three to five times longer than traditional poppet valves. “By eliminating the effects of water hammer and system shock, this.


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Computer-controlled poppet-valve actuation system for application on research engines by R. M. Richman Download PDF EPUB FB2

A computer - controlled valve actuation system for research engines is described. The system can be used for the complete real-time control of valve motion, including valve lift, dwell, valve event overlap and valve timing. The value actuator is a fast electro-hydraulic unit, incorporating a small hydraulic actuator and a high-performance by: A computer-controlled valve actuation system for research engines is described.

The system can be used for the complete real-time control of valve motion, including valve lift, dwell, valve overlap and valve timing. The valve actuator is a fast electro-hydraulic unit, incorporating a small hydraulic actuator and a high-performance servovalve. Homogeneous charge compression ignition (HCCI) is a promising low-temperature combustion strategy for reducing NO x emissions and increasing efficiency in internal combustion engines.

However, HCCI has no direct combustion initiator and, when achieved by reinducting or trapping residual exhaust gas with a variable valve actuation (VVA) system, becomes a dynamic Cited by: Fully flexible valve actuation (FFVA) system, often referred to as camless valvetrain, employs electronically controlled actuators in place of the camshaft to drive the intake or exhaust valves for internal combustion engines (ICEs).

This system offers significant fuel economy benefits, emissions reduction, and better torque output performance for the by: A Fully Flexible Valve Actuation System for Internal Combustion Engines Article in IEEE/ASME Transactions on Mechatronics 16(2) - May with Reads How we measure 'reads'.

This book is based on control valve training presentations that I gave a variety of engineers and instrument technicians over the past 25 years. In my years of applying control valves and teaching others to do the same, I gained a pretty good idea of what a person who deals with control valves needs to understand and how to best explain it to.

closing, since this type of distribution system characterized by constant angular duration of law). Mechanical Variable Valve Actuation Systems for Motorcycle Engines Carmelina Abagnale, Mariano Migliaccio, and Ottavio Pennacchia T Proceedings of the World Congress on Engineering Vol III, WCEJuly 3 - 5,London, Size: 1MB.

Poppet valves have a slender stem and mushroom-shaped head. They are commonly used in engines. When utilised in a piston engine they work by opening and closing the intake and exhaust ports in the cylinder head. The engine manoeuvres the valves by pushing on the stems.

Series Poppet Valve – Pilot operated A range of 3/2 pilot operated poppet valves in stainless steel L for use on gases. Features and Benefits • Specifically designed for severe environments • Ambient temperature range to + ºC (-4 to + °F) • L stainless steel construction • Designed for actuator File Size: 1MB.

The poppet valve is incorporated in an oil hydraulic circuit, as illustrated in Figure VG46 machine oil discharged from a gear pump at 30 L/min goes through a flow control valve, a 20 μm filter, an inline accumulator to absorb flow pulsation and an orifice flow meter to measure the flow rate (q), before being supplied to the poppet valve.

A valve actuation system is provided. The system has an engine valve moveable between a first position at which the engine valve prevents a flow of fluid relative to the engine valve and a second position at which fluid flows relative to the engine valve.

The system also has a first cam adapted to move the engine valve from the first position to the second position during a first lift period Cited by: In this paper, we explore issues related to control of an electrohydraulic variable valve system.

A nonlinear model of an electrohydraulic valve system is linearized and simplified to a reduced order model to overcome numerical stability issues.

A model based control algorithm is developed based on the reduced order by:   Residual-effected homogeneous charge compression ignition (HCCI) was investigated using a single-cylinder research engine equipped with fully-flexible variable valve actuation.

Operation at elevated compression ratios was explored to determine its effect on by: Series Poppet Valve – 1/4” to 1/2” Pilot solenoid operated A range of 3/2 pilot solenoid operated poppet valves in stainless steel L for use on gases.

Features and Benefits • Specifically designed for severe environments • L stainless steel construction • Designed for actuator control • Large flow paths (up to Cv). The Poppet Valve Steam Engine Quest I tend to favour the single-acting steam engine design because of its reduced part count and reduced friction compared to the double-acting variety.

So far I have found nothing on the market, but I have found out about a twin-cylinder single-acting engine designed by Mr. Anton Bohaboy back in the twenties.

ElectroHydraulic Valve Systems (EHVS) have the ability to vary valve profiles of internal combustion engines on a per cycle basis, thus allowing one to optimize the combustion process and improve its efficiency and emissions characteristics.

Such a capability makes an EHVS system a very suitable actuation mechanism for novel combustion : Sungbae Park, Jasim Ahmed, Aleksandar Kojic. An Electro-Magnetic Actuator for a Cam-less Engine application controlled with the SBC methodology and augmented with some nonlinear control features has performed outstanding levitation control.

A poppet valve is a mechanism that regulates the flow of fluid by a unique design consisting of a seat-like element, which opens and closes as the flow requires. Used for a wide variety of applications, poppet valves are most notably utilized in internal combustion engines.

The poppet valve has a distinctive shape that resembles a mushroom, which rises or falls in a straight line from its seat. USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords valve engine poppet valve cylinder cylinder head Prior art date Legal status (The legal status is an assumption and is Cited by: 4.

Numatics poppet valves come with different options, designs, capacities and features such as: 3-way and 2-way design. Use with air or neutral gases. For lubricated or non-lubricated service; 3-way design.

Use with air or neutral gases. Internal vacuum pilot operated. AC and DC voltages available. The Poppet Valve This vital engine part's simple, elegant design is defined by its function motion of the valves via some combination of direct actuation from the cam lobes, pushrods, rocker arms and/or lifters.

The axis of the valve’s motion is defined by direction of the stem in the valve guide in the cylinder head. Contrary to Author: Terry Shea.The yellow paint is a spring strength marking.

A poppet valve (also called mushroom valve) is a valve typically used to control the timing and quantity of gas or vapor flow into an engine.

It consists of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem.A computer controlled valve was necessary to tune the amount of EGR over a transient test cycle in order to minimize particulate increases.

Valve Timing by Means of a Rotary Actuator Even more optimization would be likely as the computer controlled valve timing could then be integrated with other computer controlled systems like the electronic.