14 results about "Free-piston engine" patented technology

The application provides a variable combustion jet piloted free piston power generation system and a control method, relates to the technical field of internal combustion generators, and comprises a linear motor, a connecting rod assembly, a jet piloted free piston engine, a state acquisition system and a control system; the linear motor is connected with the jet piloted free piston engine through the connecting rod assembly; the jet piloted free piston engine comprises a cylinder body, a piston and a pre-chamber; a first fuel injector and a second fuel injector are respectively arranged on an air inlet pipeline and a main combustion chamber of the cylinder body; a third fuel injector is arranged in the pre-chamber; the running state of the jet piloted free piston power generation system is acquired through the state acquisition system, and the running state is transmitted to the control system; and the control system sends a control signal to control the first fuel injector, the second fuel injector and the third fuel injector. The application improves the combustion process in the cylinder of the system and enhances the adaptability of the system to low active fuel.

The invention discloses a four-stroke free piston engine which comprises two sets of air cylinders, two swing gears, a one-way clutch and a transmission shaft, and each set of air cylinders comprises two opposite air cylinders. Pistons of the two air cylinders in the same group are connected through push rods, racks are arranged on the two push rods respectively, one swing gear is meshed with the racks of the two push rods respectively, the other swing gear is meshed with the rack of at least one push rod, and the swing gears are in transmission connection with the corresponding transmission shafts through one-way clutches. Each air cylinder sequentially completes an air inlet stroke, a compression stroke, a power stroke and an exhaust stroke to form a cycle, a piston of one air cylinder always works and synchronously drives the other three air cylinders to complete the air inlet stroke, the compression stroke and the exhaust stroke respectively, and the locking directions of the two one-way clutches are opposite. Therefore, it is guaranteed that one of the two transmission shafts outputs torque, the other transmission shaft idles, and the idling direction of the transmission shafts is the same as the transmission rotation direction.

A linear electromechanical system comprising: a stator comprising at least a first stator electronic circuit and a second stator electronic circuit or circuit set; a free piston mover movable in a reciprocating manner relative to the stator. The free piston comprising: a piston surface; a transducer configured such that an electromagnetic force is applicable on the free piston mover by one or more of the stator electronic circuits or one or more of the circuit set; and one or more transducer electronic circuits. The system further comprising a switching device for each of the first stator electronic circuit and the second stator electronic circuit or each of the circuit set, such that the current in each of the first stator electronic circuit and the second stator electronic circuit or each of the circuit set is independently controllable, and wherein at least one of the transducer electronic circuits is configured to receive power from at least one of the independently controllable stator electronic circuits or at least one of the circuit set during at least part of a stroke of the free piston mover.

The application discloses a two-stroke free piston engine, which comprises two opposite cylinders, a swing gear, a first one-way clutch, a second one-way clutch, a first power output and a second power output, and a piston connected through a push rod, wherein the swing gear is engaged with a rack on the push rod, the swing gear is connected with the first power output through the first one-way clutch and connected with the second power output through the second one-way clutch, and the piston makes a linear reciprocating motion once to form a first stroke and a second stroke in sequence, and in each stroke, one cylinder works and the other cylinder compresses to ensure the output power of each stroke, and the power of the two power outputs is coupled and then outputted as continuous power through a transmission unit. Thus, the complex transmission mechanism formed by the push rod, the crankshaft and the like in the prior art can be cancelled, the linear reciprocating motion of the piston is converted into rotary motion, the power in the rotary form is outputted, and the engine efficiency is improved.

A linear generator integrates an electric machine that independently controls a stator and a mover having multi-phase windings with a free piston engine (FPE) internal combustion engine. The eco-friendly generator according to the present invention has a relatively simple structure in terms of machinery, thereby achieving an eco-friendly generator with high reliability and durability, very high fuel / energy efficiency with respect to weight-volume, and high output. In addition, the motor can implement strong spring and damper functions, thereby enabling an environmentally friendly generator that does not require additional physical springs and dampers to be implemented.

The application discloses a kind of multi-motor series free piston linear power generation system and control method, belong to power generation system technical field, comprising: linear motor and two free piston engines respectively arranged in the two sides of linear motor;Engine cylinder cylinder is provided with lubricating oil oil sprayer;Piston assembly is slidably arranged in the cylinder of engine cylinder, and lubricating oil oil sprayer is used to spray lubricating oil to the friction contact of piston ring and engine cylinder;Linear motor includes first linear motor, second linear motor and third linear motor;First linear motor, second linear motor and third linear motor share same linear motor mover;Linear motor mover is provided with magnetic scale displacement sensor;Wherein, in the process of system operation, second linear motor as main motor, always in generator operating mode, first linear motor and third linear motor as auxiliary motor, for the cold start of system and piston displacement trajectory control.

The application discloses a four-stroke free piston engine, which comprises two groups of oppositely arranged cylinders, a swing gear, a first one-way clutch, a second one-way clutch, a first power output and a second power output, wherein the swing gear is arranged in a fixed shaft rotation mode, the pistons of two cylinders in each group are connected through push rods, the swing gear is engaged with the racks on the two push rods, each cylinder sequentially completes an intake stroke, a compression stroke, a working stroke and an exhaust stroke, four strokes form one working cycle, and the piston of one cylinder is always working, and the other three cylinders are synchronously driven to complete an intake stroke, a compression stroke and an exhaust stroke respectively, so that the complicated parts such as the push rod, the crankshaft, the high-pressure oil bearing and the high-pressure oil pump in the prior art can be cancelled, the linear reciprocating motion of the piston is converted into rotary motion, the power in a rotary mode is output, the engine efficiency is improved, and the engine is suitable for being used as the engine of HEV, PHEV and REEV vehicles.

The invention discloses a free piston engine which comprises two oppositely-arranged air cylinders and further comprises two swing gears, one-way clutches and transmission shafts, the one-way clutches and the transmission shafts are matched with the swing gears respectively, pistons of the two air cylinders are connected through a push rod provided with a rack, and the swing gears are meshed with the rack. The swing gear is in transmission connection with the transmission shaft corresponding to the swing gear through one-way clutches to form fixed-axis rotation, one-time linear reciprocating of the piston forms a cycle, and the locking directions of the two one-way clutches are opposite to each other, so that it is guaranteed that the two transmission shafts alternately output torque and idle within two strokes of one reciprocating. The idling direction of the two transmission shafts is the same as the transmission rotation direction, a transmission mechanism composed of a crankshaft and the like is omitted, and linear reciprocating motion of the piston is converted into rotation motion so as to output power in a rotation form.

The invention provides multi-fuel regulation and control equipment and method suitable for a free piston generator, and relates to the technical field of power generation equipment, the multi-fuel regulation and control equipment comprises an auxiliary system, a control system, a rotor displacement sensor, a cylinder pressure sensor, a free piston engine, a temperature sensor, a tail gas analyzer and an oil mass agent; the auxiliary system comprises an air inlet assembly, a lubricating assembly and a limiting assembly. The control system comprises a first module, a second module, a third module and an upper computer, the first module, the second module and the third module are mutually connected, and the upper computer is connected with the second module; the main oil nozzle and the auxiliary oil nozzle are respectively connected with the oil mass agent; the rotor displacement sensor is installed in the linear motor rotor. The cylinder pressure sensor, the temperature sensor and the tail gas analyzer are all installed on a cylinder cover of the free piston engine. Under different operation conditions, the fuel mixing proportion can be adjusted according to requirements, and the adaptability and efficiency of the free piston generator are improved.

This invention provides a free piston generator system equipped with a flexible stiffness damping mechanism, relating to the field of piston generator technology. The system includes: a linear motor, a free piston engine, a flexible stiffness damping mechanism, an operating condition identification module, and a control system. The control system receives and processes information from the operating condition identification module, assesses whether intervention via the flexible stiffness damping mechanism is necessary, and controls the flexible stiffness damping mechanism when intervention is required. The flexible stiffness damping mechanism includes: a connecting rod, a limit block, a stiffness spring, a servo positioning mechanism, and a servo motor. The control system is connected to the servo motor, and the limit block is fastened to the connecting rod by bolts. The stiffness spring is connected to the limit block and the servo positioning mechanism, and is constrained between the limit block and the servo positioning mechanism. The servo positioning mechanism is arranged on a guide rail between the linear motor and the free piston engine, driven and positioned by the servo motor to constrain the stiffness spring to a specific length.

A structural arrangement for an internal combustion engine and / or star shaped air compressor, without a crankshaft and connecting rods and with one or more surrounded pistons, being able to use any fuels in the case of the engine, liquid or gaseous including hydrogen and obtain high thermodynamic efficiency. The engine and / or air compressor has an arrangement that makes it possible to transmit linear movement into circular movement by means of a ring together with an eccentric and with a coupling structure, The structure joins the pistons to the ring, which can be polygonal in the case of the use of at least three pistons or welded in the case of one or two pistons.

The utility model relates to a transport tool driving system, the transport tool is driven by at least one motor, the electric energy of the motor is obtained from a storage battery (storage battery) or from additional vehicle-mounted fuel by means of an internal combustion engine, and the transport tool is not directly driven by the internal combustion engine. The utility model further relates to a transport tool provided with the driving system. The utility model relates to a vehicle drive system consisting essentially of a modular unit comprising a drive unit (1) and an electric motor (12) for driving the vehicle, the drive unit (1) comprising an internal combustion engine (2) which is connected to a generator (3) directly or indirectly by means of a flange on the crankshaft side, and a battery unit (17) connected to the generator (3) by means of a flange on the crankshaft side. The utility model relates to a drive unit (1) for a motor vehicle, in particular a motor vehicle, and a supercharger (5) is connected directly or indirectly on the opposite side of the crankshaft by means of a flange, or the drive unit comprises a turbocharger arranged in the exhaust gas system of the drive unit (1), or the drive unit (1) comprises a free piston engine with a linear generator.

The application provides a free piston internal combustion generator with automatic state switching, comprising a free piston engine, a linear generator, a spring return mechanism, a direct current power source starting system, an electromagnetic load system, an induction signal trigger receiving system, the free piston engine comprising a cylinder and a piston reciprocating in the cylinder, a cylinder head at the end of the cylinder being provided with a valve air intake mechanism, a valve air exhaust mechanism and an ignition system, the linear generator comprising a linear motor stator and a linear motor rotor. A signal trigger placed in the piston triggers an induction switch to work at different signal receiving points, with the amplitude of reciprocating motion of the linear motor rotor increasing, the automatic switching of three states of system cold start, drag combustion and stable power generation being completed, and at the same time, a pre-warning trigger signal is arranged at the signal receiving point closest to the cylinder head and the signal receiving point farthest from the cylinder head, the pre-warning of misfire and cylinder collision of the free piston internal combustion generator system is realized, and the stable operation of the system is ensured.

The invention belongs to the technical field of engines, and discloses a crankshaft-free piston type engine which comprises at least one air cylinder set, each air cylinder set comprises two air cylinders arranged oppositely, a piston is arranged in each air cylinder, the pistons of the two air cylinders are connected through a push rod, and a load of the engine is in power connection with the push rod; the engine further comprises a reciprocating motion flywheel mechanism, the reciprocating motion flywheel mechanism comprises a sliding block, a sliding rail seat and a flywheel, the sliding block is fixedly installed on the push rod, a sliding rail is arranged on the sliding rail seat, the sliding block is in sliding fit with the sliding rail, the base line of the sliding rail is a closed plane curve, and the sliding rail seat is coaxially and fixedly connected with the flywheel through a connecting shaft. The rotary motion of the piston and the push rod is coupled with the rotary motion of the energy storage flywheel through the sliding rail and sliding block mechanism, the piston and the push rod are driven to do reciprocating linear motion through the rotation inertia moment of the flywheel, an engine is conveniently started, and the inertia moment needed for stable operation is provided for the engine.