Design Features and Initial Performance Data on an Automotive Steam Engine Part II - Reciprocating Steam Expander - Design Features and Performance

Syniuta, W.D.; Palmer, R. M.

doi:10.4271/740296

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…Another simple and reliable mechanism for controlling the length of admission or "cut-off" (i.e., the expander displacement) consists of using two poppet valves in series and adjusting the time of opening overlap (Syniuta and Palmer, 1974;Demler, 1976). Both supply and exhaust valves can be actuated in order to control the volume at the end of the supply process (V IC ) and at the end of the discharge process (V EC ).…”

Section: Mechanical Aspectsmentioning

confidence: 99%

“…Also the uniflow configuration tends to simplify the design of the expander because of the use of exhaust port openings instead of actuated valves. As a consequence, for the same stroke and expander (cut-off) displacements, the machine produces a larger power than uniflow expanders (Syniuta and Palmer, 1974). Such machines are generally characterized by a higher clearance volume in order to prevent over-compression (Daccord et al, 2013).…”

Section: Mechanical Aspectsmentioning

confidence: 99%

See 1 more Smart Citation

Positive displacement expanders for Organic Rankine Cycle systems

Lemort

Legros

2017

Organic Rankine Cycle (ORC) Power Systems

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Section: Mechanical Aspectsmentioning

confidence: 99%

Section: Mechanical Aspectsmentioning

confidence: 99%

Positive displacement expanders for Organic Rankine Cycle systems

Lemort

Legros

2017

Organic Rankine Cycle (ORC) Power Systems

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“…The ZEE is a steam engine and uses conventional peripheral components, such as, pumps, steam generators, heat exchangers and condensers. However, the basic idea and these components of the hardware are the only things that the ZEE has in common with the well-known steam engines of the 70's [1][2][3][4]. In order to develop a modern version of the steam engine idea, IAV combined the most innovative concepts of material science, control engineering and combustion technology along with unusual thoughts on thermodynamics.…”

Section: General Concept Of the Zeementioning

confidence: 99%

(2-28) Zero Emission Engine : A Novel Steam Engine for Automotive Applications((NCS-3)Novel Combustion Systems 3-Homogeneous Charge, Premixed Charge Compression Ignition Engines)

MoBbauer¹,

Durst

Trimis

et al. 2001

COMODIA

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Taking advantage of several of the most modern research and development achievements in combustion technology, material science, control engineering, together with some unconventional thoughts on thermodynamics, a novel concept of a steam engine is presented, which is especially suitable for automotive engine applications. The paper starts by describing the general concept of the so-called Zero Emission Steam Engine, which includes supercritical thermodynamic states and high-pressure steam injection, and further focuses on the porous burner technology as the actual heat source of the process. Following a brief description of the principle of operation, the unique advantages of this novel heat source for the steam engine are outlined. These advantages include a wide, infinite variable power turndown ratio of about 1:20, which is roughly a factor of 5 greater than the modulation range of competitive burner technologies. Additionally, the porous burner excels by very low combustion emissions that are independent of the actual thermal load of the burner and are -at any state of operation -clearly below the most stringent Super Ultra Low Emission Vehicle (SULEV) standards. Another advantage of immense importance in mobile applications is the compactness of the porous burner units. Using superior heat transport properties, the porous burner allows power densities of about 3.000 kW/m², which is about a factor of 10 greater than the value of other premixed, low emission burner technologies, resulting in very small burner units. Finally, the porous burner technology allows complex combustion chamber geometries to be realized, which may be of special interest in applications where space is limited. Using these advantages, several porous burners for different concepts of ZEE-engines have been developed and are currently undergoing testing from which the results are presented in this paper. Although the presented prototypes are far from being mass-produced, the experimental results obtained from the prototypes clearly indicate that porous medium burners together with a modern steam engine concept can indeed be successfully applied to car engines and offer significant advantages compared to conventional state-of-the-art engines.

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