JP2015098810A - Exhaust gas regenerative brake type hybrid engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of recovering kinetic energy to be recovered at the time of applying brake in view of the fact that originally an automobile engine has no function for recovering energy and kinetic energy to be recovered at the time of applying brake is exclusively deposited as heat energy at a braking system.SOLUTION: An exhaust valve 2 for blocking an exhaust system is installed at the exhaust system and high pressure exhaust gas obtained by the exhaust valve 2 is recovered and stored in a cylinder 6. In addition, high pressure air stored in the cylinder is guided by a pipe passage to an intake system so as to perform a high pressure forced intake through a direct driving valve 13, thereby an engine is driven by high pressure air. This invention comprises the aforesaid constitution and provides a compact self-contained type hybrid engine in which the engine itself has a function of regenerative brake and is set free from a necessity for additional arrangement of a power system.

Description

      The present invention realizes regenerative braking in an engine such as an automobile, in which energy during braking is recovered and regenerated as driving force.

      Conventional engines such as automobiles do not originally have a function of recovering energy, and a separately provided braking system does not recover kinetic energy at the time of braking, but exclusively discards it as heat energy.

JP 2010-247797 A

Kazuo Higaki Engine ABC Kodansha 2009

However, according to the above technology, kinetic energy is not recovered during braking, but is discarded as thermal energy exclusively in the braking system. For regenerative braking, a motor generator and a power storage device are provided separately. Means were needed.
Accordingly, an object of the present invention is to provide means for performing regenerative braking by the engine itself.

        In order to solve the above-described problems, the present invention provides a valve and a high-pressure exhaust line for collecting and storing a valve that closes the exhaust system in the exhaust system and a cylinder, and intakes high-pressure air stored in the cylinder. The hybrid engine is characterized in that a pipe leading to the system and a valve for controlling high-pressure forced intake are provided.

According to the present invention, the exhaust system is closed by a valve during braking, the engine can be operated as a compressor, and the kinetic energy can be recovered as high-pressure air, and the forced intake valve is controlled during driving including starting. The engine can be operated as an air motor.
Thus, a regenerative braking function can be provided to the engine itself, and fuel consumption can be greatly reduced without separately providing a power system such as a motor generator.

It is a pipe line lineblock diagram showing one embodiment of this invention. It is a pipeline diagram which shows a prior art.

One embodiment of the present invention is shown in FIG.
The engine body 1 is a four-cycle gasoline engine, in order to guide high-pressure air from the outside between pipes that collect and store high-pressure exhaust gas that has been guided through the check valve 3 when the exhaust valve 2 is blocked. And a check valve 4 are connected to an external compressor 8 via a connector 7. The cylinder 6 is composed of a plurality of cylinders, and is connected in series via a check valve 5 and a back pressure valve 9.
The throttle valve 10 provided in the intake system is controlled to be fully opened to avoid intake resistance in conjunction with the stop of fuel supply during regenerative braking, and to fully closed for forced intake when the air motor is running. As valves for controlling forced intake, an ejector drive valve 12 and a direct drive valve 13 of the engine body are provided, and both are selectively controlled.

According to this embodiment, there are the following effects.
The external compressor 8 can supply high-pressure air to the cylinder 6 to increase the air motor traveling ratio, thereby further reducing fuel consumption.
By connecting a plurality of cylinders 6 in series, the capacity as a whole can be increased. On the other hand, by sequentially filling a plurality of cylinders, it is possible to bring about an early rise in operating pressure and high stability.
The stored high-pressure air is used not only for direct-drive air motor running, but also when running as a gasoline engine, the ejector 11 is driven by high-pressure air and used as a supercharger, so that it is aspirated during acceleration. Efficiency can be increased and engine output can be increased.

Other embodiments are described below.
In the embodiment of FIG. 1, the configuration is such that the effect of regenerative braking is enhanced by using a plurality of cylinders 6. However, in another embodiment, the system is expanded to an existing engine as a compact system with a single cylinder having a small capacity. Things can be used. In this case as well, fuel consumption can be reduced by leaving the start and acceleration to the air motor and stopping idling when the vehicle is stopped.

    If this system is installed in a conventional hybrid system in which a motor generator and a power storage device are separately provided, a power storage device having a capability limit for rapid charging can be complemented and more effective regenerative braking can be realized.

In the embodiment shown in FIG. 1, the high-pressure exhaust is directly guided to the cylinder 6. However, in other embodiments, the swash plate piston motor is driven by the high-pressure exhaust, and the high-pressure air is driven by the swash plate compressor linked thereto. May be supplied to the cylinder 6.
In this case, by adjusting the inclination angle of the swash plate, clean high-pressure air can be efficiently obtained corresponding to a wide range of braking force from low load to high load, and can be used as a supercharger even during normal engine running. .

    In the embodiment of FIG. 1, the engine body 1 is a four-cycle gasoline engine. However, in other embodiments, an internal combustion engine such as a two-cycle engine or a diesel engine or an external combustion engine such as a steam engine may be used.

1 Engine Body 2 Exhaust Valve 3 Check Valve 4 Check Valve 5 Check Valve 6 Cylinder 7 Connector 8 External Compressor 9 Back Pressure Valve 10 Throttle Valve 11 Ejector 12 Ejector Drive Valve 13 Direct Drive Valve

Claims (1)

        A valve and cylinder that collects and stores high-pressure exhaust in the engine exhaust system and a cylinder that collects and stores the exhaust, and a pipe that guides the high-pressure air stored in the cylinder to the intake system and high-pressure forced intake are controlled. A hybrid engine characterized by providing a valve to perform.