Transcript The Elsbett gas-exchange-system the path to max. efficiency The revolution of the internal-combustion engine technology 4-Stroke opposed-piston-engine and MaxE-Line Two new internal combustion engine-lines.

The Elsbett gas-exchange-system
the path to max. efficiency
The revolution of the internal-combustion engine technology
4-Stroke opposed-piston-engine and MaxE-Line
Two new internal combustion engine-lines (World-Novelties)
Elsbett 4SOPE
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
MaxE Line
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The Elsbett gas-exchange-system
the path to max. efficiency
The revolution of the internal-combustion engine technology
4-Stroke opposed-piston-engine and MaxE-Line
Two new internal combustion engine-lines (World-Novelties)
The new engine concept presented here benefits from approved superior thermodynamic efficiency of opposed piston engines
(without constraints and handicaps hitherto known for piston controlled gas exchange design).
This design is replaced by a new one, which can also be used in exactly the same manner with conventional internal combustion
engines.
It allows flexible valve timing and compression ratio, as well as the use of all other application found to be advantageous
technologies for engine optimization
Additional functions / - benefits of the new engine concept for both engine lines OPE and MaxE (exclusively bound to both):
1. max. flexible hydraulically controlled gas exchange system provided with pistons running in movable sleeves
2. static / dynamic shift-change to 2- / 4- / multi-stroke drive mode
3. max. cross sections of valve orifice (minimisation of gas-flow losses)
4. sequential injection for homogeneous fuel mixture formation by several injection nozzles in cylinder wall with free jet
alignment
5. the built-in flexibility for change of internal engine modification offers an alternative technology for a replacement of
mechanically/hydraulically coupled control devices í.e. camshaft as conventional means for valve timing, injection system etc.
via ECU (similar to “fly by wire”) offering significant savings with respect to investment and operational cost
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
Prototype
The engine You see above is the operating prototype. If You are interested You can visit us and we can demonstrate You the working
prototype. For terms please contact Dr. Otto Daude.
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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Elsbett 4SOPE and MaxE – Line
Elsbett 4SOPE:
The engine presented is operated as 4-stroke-opposed-piston-engine (4S0PE) by arrangement of hydraulically shifted liners undisrupted by
scavenging gaps. As a result the pistons with their rings are shielded against crossing any in- or outlet-ports.
Some prototypes have already been tested successfully, demonstrating the function of shift-liners without problems and showing very low
friction losses for the shift-liners.
The wall thickness of these liners can be kept low - like conventional dry liners - as they are guided and supported by the surrounding
cylinder material, leading to low oscillating liner masses during shifting.
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
Prototype
The presented experimental-OPE was created to demonstrate the functions of the hydraulically shifted liners in a fired engine. These parts
are mashined from single pieces of material. This OPE is running with a mechanical fuel injection system with pintle-nozzles and a simple
governor. No ECU or emission treatment is applied.
Data: Single-cyl., 4-stroke, NA, bore/stroke = 108/118mm, P = 35 kW at 1500 rpm and BSFC = 272 g/kWh (rated P, Diesel fuel).
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
Comparison of flow square area conventional multi-valve technique
vs. OPE-design
The in- and outlet ports are located near the pistons top dead centre area and are opened and closed by the upper end of the shift liners
like sleeve-valves, which are closed by spring forces and opened by hydraulic actuation. Different to conventional combustion engines there
are no distinct exhaust or intake pistons and the thermal load is nearly equally distributed on both pistons. The hydraulic system shares the
lubrication oil with the engine, avoiding leakage problems and providing a simple oil circuit.
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
Elsbett 4SOPE: Best specific values
MaxE: Most variable high efficient engine
Sets max. thermodynamic efficiency for internal combustion
engines.
Maximal variability for change of internal engine modification
integrated in internal combustion engines whilst running engine.
Max. power/weight- and max power/volume ratio.
Variable valve timing with simple means due to hydraulic
actuation, running on 2- or 4-Stroke mode possible.
In combination with an alternate running mode (4-/2-Stroke, vice
versa) plus variable VCR this engine offers variation options to
optimise the combustion process, efficiency and further engine
characteristics, unknown up to now.
Ideal mass balance of first and second order, no piston phase
shifting.
Cam controlled hydraulically powered change from 4-stroke to 2stroke mode and vice/versa whilst running.
No emission-problems as known for conventional 2-Stroke OPE s,
as piston rings are shielded against crossing any in- or outlet
ports.
Multi-stroke capability without camshaft/cams via mechanic
distributor or by solenoid valve controlled by an electronic control
unit (ECU).
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
Main benefits of both Lines:
Intake and exhaust in the middle of cylinder, therefore no hot or cold piston as in conventional OPE s.
Principle and make of valve design for both engines offers same functions with very large scavenging areas and variable valve timing with
simple means due to hydraulic actuation, though differently placed with regard to MaxE’s “cylinder head” housing the hydraulic piston for
the variable compression ratio ” VCR”.
A/F mixture by injection from „Hot to Cold“ towards combustion chamber walls, or alternatively injection from „Cold to Hot“ towards
combustion chamber centre.
Simple swirl creation, or variable swirl creation possible.
Multi-fuel ability.
Principally all advantages of conventional 4-stroke engine, without any disadvantages of 2-stroke engines; with regard to emission, oil
consumption, cylinder filling, turbo charging, cooling and bmep.
All known means for engine improvement (common rail, turbo-charging, exhaust after-treatment, etc.) can be applied as well.
All types of fuel can be burned.
Diesel, Gasoline, Methanol, Ethanol, H2, LPG, CNG, Biogas, SVO (straight vegetable oil).
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
Preferred position of placing
Without question the Elsbett 4SOPE and the Maxe – Line soon – based on their exceptional advantages – will gain outstanding position
within the general field of action of internal combustion engines, surely not predominantly to start in volume markets; more so with
medium and big size engines and high annual service performance.
Reduction of running costs, maintenance costs, enlarged endurance and more special location specific advantages such as steady-state
operational behaviour and dynamic operational behaviour are at stake.
Continuous running duty like in Power station, Gen sets, CHP, Pumps for irrigation, Oil- and Gas-Pipelines will mostly be better powered by
Elsbett 4SOPE s, best tuned for max. efficient running costs.
Same with big units with slow speed-ups, mostly continuous constant speed like big Ships or Vessel, Trams and Locomotives.
Whereas the dynamic mode (Truck-, Bus-, and Car-driving, Motorbike and Range Extender) clearly stands for installation of MaxE with its
individual Add-ons like VCR and Multi-stroke.
But there are a lot of well to argument “in-betweens” to be decided on the very case of installation, like for instance the combined
Diesel/Hydraulic – or Diesel/Electric Power-Drives and
OFF-Road: Forklifts, Tractors, Agricultural Machines, Construction Machinery
Military: Tanks, Jeeps, other Military Vehicle
Aviation: Propeller aircrafts, Helicopters and Drones
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
MaxE - Line
• As only one piston is used for powering the engine, the
second piston is providing a simple variable compression ratio
system (VCR) when changing its position inside the shift-liner.
• Combustion engines with hydraulically controlled gas
exchange transmission allow the change of 2-Stroke-, 4-Stroke
and further Stroke-modes whilst running engine.
• the actuation may be realized without cam interaction by a
mechanic distributor feeding hydraulic pressure to actuators
according to necessary sequence of valve timing
• Alternatively this could be arranged for by solenoid valves,
which by means of an electronic control unit (ECU) allows for
optional valve timing and thus an enlarged number of stroke
modes beyond 2- / 4-Stroke modes successive („Non active“)
strokes without feed and ignition of fuel. During this
interruption the gas exchange transmission may rest closed
and used as a controlled valve system for pumping a gas
volume. This may be used in numerous combination and
variation to optimize engine’s characteristics (such as
pumping exhaust gas and/or fresh air in a pressure tank which
– as required and when – may be used for pressure charging
(loading) and/or exhaust gas recirculation (EGR)
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
MaxE – Line Multi Stroke
Principle of
electronic controlled
hydraulic shift liner
actuation
Allows multi-lift and
multi-stroke
conditions
Air
Accumulator
Engine
DriveVariability
and
Potential
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
Protected Rights
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system vs. conventional design
Comparison and validation regarding design flexibily in operation modi and design elements
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
Aggregate - Wirkungsgrad
by Prof. Günter Elsbett and Dr. Otto Daude, Germany
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The Elsbett gas-exchange-system
by Prof. Günter Elsbett and Dr. Otto Daude, Germany