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Author: Liviu Giurca 
Senior Researcher at VP Holding 
New Hybrid Propulsion Systems 
for Buses and Trucks
State of the art 
Liviu Giurca 06.11.2014 2 
Diesel Bus 
“Conventional” Hybrid Bus 
Trolleybus Volvo Docking station 
syst...
State of the art 
Scania-Siemens dynamic charging and 
the Electrified Highway
”Conventional” hybrid bus versus diesel bus 
Liviu Giurca 06.11.2014 4 
Benefits: 
1. Improved fuel consumption 
2. Reduce...
New hybrid solutions 
1. New engine with heat recovery proposed to replace diesel 
engine in the hybrid powertrain 
2. Hyb...
New IC engine based on Dr. Paul mechanism 
Almost 20 years ago (in 1996), this variant already 
obtained 52% Brake Efficie...
Our proposal 
Liviu Giurca 06.11.2014 7 
First civil exploitation of Paul mechanism 
Was proposed and produced in series b...
The new engine versus conventional engine 
The most important benefits are: 
1. Highest power density between 300 to 600 k...
Pneumatic Hybrid Engine 
Liviu Giurca 06.11.2014 9 
The new proposed Pneumatic 
Hybrid Engine with dual crankshafts 
is ma...
Pneumatic Hybrid versus Electric Hybrid 
The Pneumatic Hybrid concept is made 
using a mechanical control between the 
exi...
Hybrid electric vehicle with dynamic charging 
Our proposal is to charge in motion a hybrid vehicle using a single 
overhe...
Hybrid electric vehicle with dynamic charging 
The single overhead line with both polarities 
Liviu Giurca 06.11.2014 12
VERSUS 
-The new concept creates a real world alternative to the actual 
propulsion system of the heavy vehicles. It is no...
VERSUS 
-It uses unmodified pantograph; 
-The bus supports a big deviation from the trajectory without 
to be disconnected...
Conclusion 
No. Type of urban 
transport 
Technology 
cost 
Pollution 
level 
Efficiency Infrastructu-re 
cost 
Recyclabil...
About author 
Liviu Grigorian Giurca is a senior researcher which 
accumulated experience working for international compan...
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Presentation innovative hybrid_heavy_vehicle

A new innovative propulsion system is proposed for hybrid heavy vehicles. This system is based on a new engine concept as well as on a new dynamic charging system.

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Presentation innovative hybrid_heavy_vehicle

  1. 1. Author: Liviu Giurca Senior Researcher at VP Holding New Hybrid Propulsion Systems for Buses and Trucks
  2. 2. State of the art Liviu Giurca 06.11.2014 2 Diesel Bus “Conventional” Hybrid Bus Trolleybus Volvo Docking station system
  3. 3. State of the art Scania-Siemens dynamic charging and the Electrified Highway
  4. 4. ”Conventional” hybrid bus versus diesel bus Liviu Giurca 06.11.2014 4 Benefits: 1. Improved fuel consumption 2. Reduced CO2 emission 3. Reduced NVH level in certain conditions Disadvantages: 1. Very high purchasing price 2. Challenging recycling 3. High CO2 consumption for manufacturing
  5. 5. New hybrid solutions 1. New engine with heat recovery proposed to replace diesel engine in the hybrid powertrain 2. Hybrid pneumatic operation of the internal combustion engine 3. Hybrid electric vehicle with dynamic charging Liviu Giurca 06.11.2014 5
  6. 6. New IC engine based on Dr. Paul mechanism Almost 20 years ago (in 1996), this variant already obtained 52% Brake Efficiency and a huge power density, without heat recovery due to its extreme compression ratio. Liviu Giurca 06.11.2014 6
  7. 7. Our proposal Liviu Giurca 06.11.2014 7 First civil exploitation of Paul mechanism Was proposed and produced in series by Neander Motors and is a four stroke version. We propose a four stroke version with heat recovery. Our new solution is registered to the patent office. Neander Motors engine
  8. 8. The new engine versus conventional engine The most important benefits are: 1. Highest power density between 300 to 600 kW/l; 2. Reduced CO2 level; 3. Compensation of all rotating inertial forces resulting in a fully balanced engine with reduced noise level; 4. Compensation of all 1st order oscillating forces (torque compensation); 5. No reaction due to torque impulses on the exterior of the engine are detectable; 6.Very low friction losses from the guidance of the piston by the connecting rods (the lateral guiding force of the piston is effected by the connected rods); 7. Lowest fuel consumption between 95 and 125 g/kWh; 8. A dramatic reduction in cost of production and exploitation, respectively a two cylinder version can replace a four or six cylinder conventional engine. Liviu Giurca 06.11.2014 8
  9. 9. Pneumatic Hybrid Engine Liviu Giurca 06.11.2014 9 The new proposed Pneumatic Hybrid Engine with dual crankshafts is made in the simplest manner using a mechanical control of the air circuit existent between the combustion chamber and an air tank. In vehicle braking phases with fuel cut-off, the engine can intake air and pump it into the pressure tank. The pressurized air can be used to boost the conventional engine combustion mode, thereby overcoming the turbo-lag in supercharged engines.
  10. 10. Pneumatic Hybrid versus Electric Hybrid The Pneumatic Hybrid concept is made using a mechanical control between the existent exhaust air circuit connected to the combustion chamber and an air tank. In engine braking phase with fuel in cut-off mode, the engine pumps the intake air into a high pressure tank. The pressurized air can later be used as a bonus to supercharge the engine or to drive directly the vehicle. Compared to some existing vehicle electric hybrid systems, the proposed solution eliminates the electric generator/motor assist and battery components which are additional to the engine. This type of application reduces cost, complexity, and weight while providing similar function and benefits. Air, even when compressed to high pressure, remains very light, and therefore the added weight is, essentially, limited to the weight of the tank. Consequently, this small weight increase of the proposed hybrid system does not penalize the base vehicle fuel economy. Liviu Giurca 06.11.2014 10
  11. 11. Hybrid electric vehicle with dynamic charging Our proposal is to charge in motion a hybrid vehicle using a single overhead line containing both polarities. Liviu Giurca 06.11.2014 11
  12. 12. Hybrid electric vehicle with dynamic charging The single overhead line with both polarities Liviu Giurca 06.11.2014 12
  13. 13. VERSUS -The new concept creates a real world alternative to the actual propulsion system of the heavy vehicles. It is not need to make so many researches to develop such a system because all the components are already used separately in some applications; -The system can be battery free solution or can use some super-capacitors to recover the brake energy when is not dynamic charged; -For this reason is a low cost bus (the batteries are very expensive); -When the engine is used it is a low fuel consumption bus. If the fuel is CNG or hydrogen the pollutants are at very low level; Also the noise is reduced because the engine is fully balanced; -When is electrical supplied from the catenary system with green energy it is a zero pollution vehicle; -The total efficiency is improved and consequently the cost reported to km will be diminished. -It maintains the same flexibility of the actual transport system based on the diesel trucks. Liviu Giurca 06.11.2014 13
  14. 14. VERSUS -It uses unmodified pantograph; -The bus supports a big deviation from the trajectory without to be disconnected from the supply line; -The single line is cheaper than two distanced lines and is protected better in bad weather conditions. Liviu Giurca 06.11.2014 14
  15. 15. Conclusion No. Type of urban transport Technology cost Pollution level Efficiency Infrastructu-re cost Recyclability Scor 1 Diesel Urban bus + -- -- + 0 -- 2 Trolleybus -- ++ ++ -- 0 0 3 Electric Diesel hybrid urban bus - + + + -- + 4 Pneumatic Hybrid Urban bus ++ + + + 0 +++++ 5 Hybrid Urban bus with charging possibility - ++ ++ - 0 ++
  16. 16. About author Liviu Grigorian Giurca is a senior researcher which accumulated experience working for international companies as Ford, Renault, Daewoo Motors, IDEA Institute , AKKA Technologies, MSX International and VP Holding. He has 8 patented inventions in different countries. He also contributed to many innovative projects as Renault/Dacia Logan, Sandero and Duster (the most innovative projects in terms of cost reduction) or Ford EcoBoost 1 L engine awarded as the Engine of the Year in 2012, 2013 and 2014. E-mail: lgiurca@hybrid-engine-hope.com URL: www.hybrid-engine-hope.com

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