a system economically using compressed air as automobile power source, characterized in that, the system comprises a compressed air power device, a mechanism to produce, store and provide compressed air, a brake energy recovery and regeneration device, an inner gear ring assembly, some clutch transmission devices and a controller;
- the compressed air power device includes one or more air storage tubes (1) on an automobile and one or more cylinder-combined engines for using the compressed air to produce driving power;
- the mechanism to produce, store and provide the compressed air includes a boiler-type high-pressure compressed air production and storage device, abbreviated as boiler-type HCAPS device (4), and an air compressor (98), the working pressure of the air compressor (98) is close to, equal to or exceeds 100 Mpa;
- wherein the boiler-type HCAPS device (4) consists of a water tank (94) and a bent tube-type high-pressure compressed air storage (95), while the bent tube-type high-pressure compressed air storage (95) is arranged inside the water tank (94), with its one end connected with the air compressor (98) and another end with air inflation equipment to connect with the air storage tube (1), and the water tank (94) is connected with the central heating system;
- the mechanism to produce, store and provide the compressed air is to use electricity likely during periods of low energy demand namely off-peak electricity such as at night or electric energy being not easy stored simultaneously recovering the by-produced heat for central heating, to produce and store the high-pressure compressed air pressurizing and inflating the air storage tubes (1);
- the brake energy recovery and regeneration device includes a spring reserving-releasing device and/or a compressed air reserving-releasing device as well as a braking energy storage transmission mechanism and an energy release drive transmission mechanism, and they are used to recover the kinetic energy lost during the deceleration and braking of an automobile which is driven by compressed air as power source, and to utilize the recycled energy in starting and accelerating the automobile, to reduce the consumption of compressed air in the air storage tubes (1) used as the automobile driving power;
- the inner gear ring assembly includes an inner gear ring (2) and, at respective fixed axis innerly meshing with the inner gear ring (2), a first accelerating gear (72), a second accelerating gear (92), a flywheel front inner meshing gear (48), a plurality of acting gears (45) and a plurality of reset gears (46);
- wherein the plurality of acting gears (45) are respectively in transmission connection with the cylinder-combined engines via the clutch transmission devices, the first accelerating gear (72) is in transmission connection with the spring reserving-releasing device via the clutch transmission device, the second acceleration gear (92) is in transmission connection with the compressed air reserving-releasing device via the clutch transmission device, the flywheel front inner meshing gear (48) is driven by the rotation of the inner gear ring (2) to rotate and is in transmission connection with a flywheel (47) to output the rotating torque of the inner gear ring (2) to the flywheel (47), and the plurality of reset gears (46) are driven by the rotation of the inner gear ring (2) to rotate and can return the torque back to the cylinder-combined engines via the clutch transmission devices respectively;
- the clutch transmission devices are connected with the controller;
- wherein the air storage tube (1) is a long tube-type high-pressure compressed air storage device, the air storage tube wall (1a) is made of high-pressure resistant material, with its diameter less than the inner diameter of the conventional automobile compressed air storage tank in the prior art, and for the same material it can store the compressed air under higher pressure;
- one end of the air storage tube (1) is sealed, while another end of the air storage tube (1) is equipped with an air storage tube inlet/exhaust valve (6) controlled by the controller;
- the air storage tube inlet/exhaust valve (6) can be connected with the bent tube high-pressure compressed air storage (95) via an air storage tube inflation valve (5) to inflate the air storage tube (1) with high-pressure compressed air, the air storage tube inlet/exhaust valve (6) is connected with an air storage tube exhaust duct (7) via which communicating with the cylinder-combined engines to exhaust compressed air to the cylinder-combined engines;
- the air storage tube (1) is coiled together, or naturally extended along the orientation of the car frame and chassis, and a protective shell (8) is arranged outside the air storage tube (1);
- one of the air storage tubes (1) can provide one or more cylinder-combined engines with the compressed air, while one cylinder-combined engine can be filled from one or more air storage tubes (1);
- wherein each cylinder-combined engine includes a first cylinder (9) and a second cylinder (10);
- each of the first cylinder (9) and the second cylinder (10) comprises a cylinder cavity (11), a piston (12), a piston rod (13) and a long tube-type sliding barrel (31);
- wherein one end of the cylinder cavity (11) is an open end (14) and another end is a closed end (15);
- a space of each cylinder cavity (11) near the closed end (15) is called as the closed end space;
- wherein the closed end space of the first cylinder (9) is called as first cylinder closed end space (16), and the closed end space of the second cylinder (10) is called as second cylinder closed end space (24);
- the piston (12) is arranged in a sliding mode between the open end (14) and a blocking member (25) outside the closed end space;
- one end of the sliding barrel (31) is fixed in connection with the open end (14) while another end is provided with a buffering shock-absorbing device (30) with a vent (28) communicated with the atmosphere (21);
- one end of the piston rod (13) is connected to the outside of the piston (12), while another end with a stopping terminal (29) outstretches from the open end (14) of the cylinder cavity (11), is accommodated in the sliding barrel (31) and can move translationally within the sliding barrel (31);
- each of two opposing sides of the piston rod (13) is provided with a rack, respectively meshing with a piston rod upper gear (33) and a piston rod lower gear (34);
- wherein the piston rod upper gear (33) of the first cylinder (9) is called as first cylinder piston rod upper gear (33a), the piston rod upper gear (33) of the second cylinder (10) is called as second cylinder piston rod upper gear (33b), the piston rod lower gear (34) of the first cylinder (9) is called as first cylinder piston rod lower gear (34a), and the piston rod lower gear (34) of the second cylinder (10) is called as second cylinder piston rod lower gear (34b);
- the piston rod upper gear (33) is in transmission connection with acting gears (45) via the clutch transmission device;
- the piston rod lower gear (34) is in transmission connection with the reset gears (46) via the clutch transmission device;
- wherein the lengths of the cylinder cavities (11) of the first cylinder (9) and the second cylinder (10) are identical, while the lengths of the first cylinder closed end space (16) and the second cylinder closed end space (24) are also identical;
- the first cylinder closed end space (16) is equipped with a first cylinder inlet valve (17) and a first cylinder exhaust valve (18) controlled by the controller, while the second cylinder closed end space (24) is equipped with a second cylinder inlet valve (19) and a second cylinder exhaust valve (20) controlled by the controller;
- the first cylinder inlet valve (17) is communicated with the air storage tube inlet/exhaust valve (6) via the air storage tube exhaust duct (7), an electric heater (22) and a heat preservation thermal insulation layer (23) are arranged around the air storage tube exhaust duct (7) and the first cylinder closed end space (16);
- while the second cylinder inlet valve (19) is communicated with the first cylinder exhaust valve (18), and the second cylinder exhaust valve (20) is communicated with the atmosphere (21);
- the inner diameter of the cylinder cavity (11) of the first cylinder (9) is less than that of the cylinder cavity (11) of the second cylinder (10), and the both satisfy the following relation:
- r1=√{square root over ((mn−1)/u)}×r2
- in the formula, r1 is the radius of the cylinder cavity (11) of the first cylinder (9), r2 is the radius of the cylinder cavity (11) of the second cylinder (10), n is the pressure (bar) of compressed air inflated from the air storage tubes (1) to the first cylinder closed end space (16), m is the increasing ratio of absolute temperature of compressed air entering the first cylinder closed end space (16) after heated by the electric heater (22), namely air expansion ratio, u is the times of length of the cylinder cavity (11) to that of its closed end space.