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At the external side, the motor cylinder 6 is closed by a classic cylinder head 34 which contains the intake valves 35 and the exhaust valves 36. The intake valves 35 manage a transfer duct 38 and the exhaust valves 36 control an exhaust duct 39. The inlet flexible valves 13 control an inlet duct 40 and the outlet flexible valves Manage a connection duct 42 which make the link with the transfer duct 38. The connection duct 42 and the transfer duct 38 form together an accumulation chamber 43. The air flow quantity entering into the internal compressor 17 is controlled by an actuator 46 which can obstruct progressively a by-pass circuit 44 making connection oetween the compressor cylinder 8 and the inlet duct 40. This actuator 46 controls also a big part of the parasitic losses. The operation of this supercharged engine is similar with a four stroke actual engine with the difference that the intake air is

Figure 5 At the external side, the motor cylinder 6 is closed by a classic cylinder head 34 which contains the intake valves 35 and the exhaust valves 36. The intake valves 35 manage a transfer duct 38 and the exhaust valves 36 control an exhaust duct 39. The inlet flexible valves 13 control an inlet duct 40 and the outlet flexible valves Manage a connection duct 42 which make the link with the transfer duct 38. The connection duct 42 and the transfer duct 38 form together an accumulation chamber 43. The air flow quantity entering into the internal compressor 17 is controlled by an actuator 46 which can obstruct progressively a by-pass circuit 44 making connection oetween the compressor cylinder 8 and the inlet duct 40. This actuator 46 controls also a big part of the parasitic losses. The operation of this supercharged engine is similar with a four stroke actual engine with the difference that the intake air is

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This internal compressor 17 is located in the crankcase but is completely isolated from the oil pan 33 (fig. 3 and 4). The Hybrid Engine conform to this concept is a supercharged internal combustion engine 1 which uses a solid piston 2 composed from a motor piston 3 and compressor piston 4 unified by a rod 5. The motor piston 3 works inside of a motor cylinder 6 limiting the combustion chamber 7. The compressor piston 4 works inside of a compressor cylinder 8. The compressor piston 4 and the compressor cylinder 8 have an oval form. The compressor cylinder 8 is located inside a crankcase 11 being closed by a wall 12.
This internal compressor 17 is located in the crankcase but is completely isolated from the oil pan 33 (fig. 3 and 4). The Hybrid Engine conform to this concept is a supercharged internal combustion engine 1 which uses a solid piston 2 composed from a motor piston 3 and compressor piston 4 unified by a rod 5. The motor piston 3 works inside of a motor cylinder 6 limiting the combustion chamber 7. The compressor piston 4 works inside of a compressor cylinder 8. The compressor piston 4 and the compressor cylinder 8 have an oval form. The compressor cylinder 8 is located inside a crankcase 11 being closed by a wall 12.
The Hybrid Engine (fig. 2, 3, 4 and 5) uses mainly the same elements than a conventional four stroke engine configured in an innovative arrangement and adding an internal compressor placed between piston and crankshaft.
The Hybrid Engine (fig. 2, 3, 4 and 5) uses mainly the same elements than a conventional four stroke engine configured in an innovative arrangement and adding an internal compressor placed between piston and crankshaft.
The wall 12 contains few inlet flexible valve 13 and outlet flexible valve 15 which work automatically like in all the compressors. The motor cylinder 6 is located inside of a cylinder block 18 mounted on the crankcase 11. Under the motor piston 3 is mounted a pin 20 which is articulated with two connecting rods 22 situated side by side of the rod 5. The connecting rods 22 transmit the motion of the solid piston 2 to a crankshaf 24. Side by side of the compressor cylinder 8 are two lateral halls 27 which permit the motion of the connecting rods 22.
The wall 12 contains few inlet flexible valve 13 and outlet flexible valve 15 which work automatically like in all the compressors. The motor cylinder 6 is located inside of a cylinder block 18 mounted on the crankcase 11. Under the motor piston 3 is mounted a pin 20 which is articulated with two connecting rods 22 situated side by side of the rod 5. The connecting rods 22 transmit the motion of the solid piston 2 to a crankshaf 24. Side by side of the compressor cylinder 8 are two lateral halls 27 which permit the motion of the connecting rods 22.
n other configuration (fig. 6) this concept can be utilized to achieve few hyk unctions as the partial recovery of the braking energy or the stop and go operati \ supercharged engine 140 uses an internal compressor 141 which, this tin Jelivers all the compressed air directly into a main air tank 144. In this case | -ombustion chamber 7 is supplied with fresh air from the main air tank 144 when 1 ntake valves 35 are opened. If this supercharged engine 140 is used to drive vehicle with mechanical or automatic transmission, when the driver needs to sl Jown the vehicle, respectively the acceleration pedal is liberated or/and the bre yedal are touched, the actuator 46 closes completely the by-pass circ -onsequently the compressor piston 4 is stressed at maximum to compress the ail he main air tank 144. This effort is converted for the vehicle in brake force. If the driver needs more engine braking, he can change the transmission ratio in the gear box and the braking effort is amplified by the increasing rotation speed of the crankshaft. So, the brake energy is partially saved in the compressed air form.
n other configuration (fig. 6) this concept can be utilized to achieve few hyk unctions as the partial recovery of the braking energy or the stop and go operati \ supercharged engine 140 uses an internal compressor 141 which, this tin Jelivers all the compressed air directly into a main air tank 144. In this case | -ombustion chamber 7 is supplied with fresh air from the main air tank 144 when 1 ntake valves 35 are opened. If this supercharged engine 140 is used to drive vehicle with mechanical or automatic transmission, when the driver needs to sl Jown the vehicle, respectively the acceleration pedal is liberated or/and the bre yedal are touched, the actuator 46 closes completely the by-pass circ -onsequently the compressor piston 4 is stressed at maximum to compress the ail he main air tank 144. This effort is converted for the vehicle in brake force. If the driver needs more engine braking, he can change the transmission ratio in the gear box and the braking effort is amplified by the increasing rotation speed of the crankshaft. So, the brake energy is partially saved in the compressed air form.
If the vehicle is stopped few moments, the supercharged engine 140 is also interrupted. When the driver pushes one more the clutch or acceleration pedal, a pneumatic starter 147 is acted to restart the engine. The pneumatic starter 147, which achieves the stop and go function, is supplied whit pressured air by the main air tank 144. This stop and go drive generates also an important fuel economy, especially in the big agglomerations. If the driver wants to reaccelerate the vehicle, the actuator 46 opens immediately the by-pass circuit to reduce at minimum the effort of the internal compressor 141 and the energy gathered in the compressed air is released from the main air tank 144. So the intake stroke is achieved by the engine without any effort (fig. 7) and the pumping diagram becomes positive. The fuel supply is relaunched. In this particular case also the intake stroke is someway a motor stroke, because the intake air has a relatively big pressure to push the piston “down”. Consequently a big part of the wasted energy is recovered. After a number of cycles, when the pressure in the main air tank 144 gets down under its limit, the actuator 46 begins to obstruct the by-pass circuit and the internal compressor 141 delivers anew pressured air in the main air tank 144.
If the vehicle is stopped few moments, the supercharged engine 140 is also interrupted. When the driver pushes one more the clutch or acceleration pedal, a pneumatic starter 147 is acted to restart the engine. The pneumatic starter 147, which achieves the stop and go function, is supplied whit pressured air by the main air tank 144. This stop and go drive generates also an important fuel economy, especially in the big agglomerations. If the driver wants to reaccelerate the vehicle, the actuator 46 opens immediately the by-pass circuit to reduce at minimum the effort of the internal compressor 141 and the energy gathered in the compressed air is released from the main air tank 144. So the intake stroke is achieved by the engine without any effort (fig. 7) and the pumping diagram becomes positive. The fuel supply is relaunched. In this particular case also the intake stroke is someway a motor stroke, because the intake air has a relatively big pressure to push the piston “down”. Consequently a big part of the wasted energy is recovered. After a number of cycles, when the pressure in the main air tank 144 gets down under its limit, the actuator 46 begins to obstruct the by-pass circuit and the internal compressor 141 delivers anew pressured air in the main air tank 144.
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