DESC:TITLE
E-VALVE FOR HYDRAULIC BRAKE SYSTEMS

FIELD OF THE INVENTION
This invention generally relates to automobile engineering and particularly relates to an electronic valve. More particularly this invention relates to an e-valve for hydraulic brake systems.

BACKGROUND OF THE INVENTION
In general, a hydraulic brake system refers to a braking systems operated by hydraulic pressure.

Conventional brake system consists of mechanical control valves which will balance / regulate the front and rear pressure based on vehicle weights and rate of braking so as to avoid rear wheel locking of wheels. But there are some limitations in conventional mechanical valves which will avoid rear wheel lock upto meeting regulation and in some cases at higher deceleration rear wheel locks in turn loosing stability of the vehicle which vehicle manufactures will not take it seriously as it it meeting the regulation comfortably. Locking of rear wheels will lead to pulling and higher stopping distance.

Advanced hydraulic brake systems include an anti-lock brake system (ABS) that prevents slippage of a wheel during braking, a brake traction control system (BTCS) that prevents slippage of a driven wheel upon rapid start or rapid acceleration of a vehicle, a vehicle dynamic control system (VDC) that is a combination of the anti-lock brake and traction control systems and maintains a stable driving state of a vehicle by controlling pressure of a brake liquid, etc.

It has generally been necessary for automobile operators to modulate the brake pedals of their automobiles to stop and reduce speed of the vehicle depending upon their requirement. In situations where it requires for higher rate of braking then because of limitations in conventional valves it allows higher pressure which will lead to wheel slipping leading to pulling and collusion with other automobiles. This can be avoided by providing advanced brake system like ABS and VSC system but it will very expensive and is not affordable by vehicle manufactures for certain category of vehicles.

Therefore it is the need of the hour in the industry to develop a cost effective and simple electronic valve that solves the problem of at higher deceleration avoiding rear wheel lock at any point of time and at any ramp rate. This invention eventually addresses the above and also eases the assembly. This is a replacement for conventional mechanical valves and this is not a replacement for advanced brake system like ABS and VSC

Further it will be apparent to those skilled in the art that the objects of this invention have been achieved by providing an e-valve for hydraulic brake systems which is unique in nature unlike existing valves as described in various prior art that will be outlined in the complete patent specification to follow. Various changes may be made in and without departing from the concept of the invention. Additional features of the invention will be described hereinafter that form the subject of the claims of the invention. Those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiment as a basis for designing and modifying other methods and structures for carrying out the same purpose of the present invention. Further, features of some stages disclosed in this application may be employed with features of other stages. Therefore, the scope of the invention is to be determined by the terminology of the claims that will be outlined in the complete patent specification to follow and the legal equivalents thereof.

OBJECTIVES OF THE INVENTION
This invention may be summarized, at least in part, with reference to its objects.

The foremost object of the present invention is to present an e-valve for hydraulic brake systems.

Another object of the present invention is to provide an e-valve for hydraulic brake systems which provides better stability at emergency braking.

Another object of the present invention is to provide an e-valve for hydraulic brake systems which is simple to fine tune.

Another object of the present invention is to provide an e-valve for hydraulic brake systems which can be used across a wide range of hydraulic brake system vehicles.

Another object of the present invention is to provide an e-valve for hydraulic brake systems which takes care of field abuse of additional leaf spring.

Another object of the present invention is to provide an e-valve for hydraulic brake systems which is comparatively noiseless.

Another object of the present invention is to provide an e-valve for hydraulic brake systems which has fewer child parts and is simple in design.

Another object of the present invention is to provide an e-valve for hydraulic brake systems which does not require a control spring, hence eliminating control spring failure.

A further object of the present invention is to provide an e-valve for hydraulic brake systems whereby any cut-in pressure value can be achieved based on requirement and also in a circuit failed condition it will function as a bypass valve of conventional mechanical valve in turn the function of bypass arrangement is built into the system.

Additional objects, advantages and novel features of the invention will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following, or may be learned by practice of the invention.

SUMMARY OF THE INVENTION
The present invention embodies an e-valve for hydraulic brake systems. The present invention consists of a brake light switch, fluid level warning indicator, simple circuit board, cut off valve and feedback sensor.

.DESCRIPTION OF THE DRAWINGS
The advantages and features of the present invention will be more readily apparent by persons skilled in the art when considered in reference to the following description and when taken in conjunction with the accompanying drawings listed below

Figure 1 is a cross sectional view illustrating the present invention valve.
Figure 2 is a flow chart diagram of the present invention parts

DETAILED DESCRIPTION
The following description is presented to enable any person skilled in the art to make and use the invention, and is provided in the context of particular applications of the invention and their requirements. The present invention can be configured as follows:

As shown in Figure 2, the present invention e-valve parts and the function are as follows:

Number Component Function – Generic
1 Compact Simple Circuit Board with feedback sensor built into it. To get feedback from feedback sensor and to actuate the cut-off valve.
2 Cut-off valve fitted in rear brake circuit To isolate rear circuit.
3 Wires (Power and Communication) For communication and power supply.

According to a preferred embodiment of the present invention working, the e-valve components will get energized when ignition is ON. The feedback sensor will monitor the state of vehicle and give feedback to simple circuit board. When brake pedal is applied, brake light switch will give a signal to the simple circuit board. The simple circuit board will consider the vehicle state as datum at when the brake light switch is triggered. The e-Valve is programmed to actuate the cut-off valve such that the deceleration is maximized by shutting off the rear pressure thereby balancing the front and rear forces.

According to a preferred embodiment of the present invention working, above cut-off valve actuation is determined by the fine tuning of the e-valve. When the cut-off valve is actuated, it will cut-off the fluid supply to rear brake circuit and no further pressure will raise in rear circuit. Thus pressure cut-off is done in rear circuit during braking.

According to a preferred embodiment of the present invention working, the cut-off valve will be ON continuously until brake pedal is released. When brake pedal is released, a signal from brake light switch will go to the simple circuit board and the cut-off valve will be deactivated.

In the event of one circuit failed condition the present invention will take the signal from the fluid level warning indicator and through the feedback arrangement will make the cut-off valve continuously ON so that there will not be any pressure cut-off to the rear circuit.

While there has been shown and described what is considered to be preferred embodiments of the invention, it will, of course, be understood that various modifications and changes in form or detail could readily be made without departing from the spirit of the invention. It is therefore intended that the invention be not limited to the exact forms described and illustrated, but should be constructed to cover all modifications that may fall within the scope of the appended claims.

It will be apparent to those skilled in the art that the objects of this invention have been achieved by providing the above invention. However various changes may be made in the structure of the invention without departing from the concept of the invention. Therefore, the scope of the invention is to be determined by the terminology of the following claims and the legal equivalents thereof.
,CLAIMS:CLAIMS

What is claimed is:

1. E-valve for hydraulic brake systems comprising of:
a Circuit Board
a Cut-off valve, and
Wires
characterized in that the circuit board has a feedback sensor built into it

2. The e-valve as claimed in Claim 1 wherein the cut-off valve is fitted in the rear brake circuit.

3. The e-valve as claimed in Claim 1 and working thereof wherein the e-valve components will get energized when ignition is ON.

5. The e-valve as claimed in Claim 1 and working thereof wherein when brake pedal is applied, a brake light switch gives a signal to the circuit board which considers vehicle state as datum at when the brake light switch is triggered.

4. The e-valve as claimed in Claim 1 and working thereof wherein the feedback sensor will monitor the state of a vehicle and give feedback to the circuit board and actuate the cut-off valve such that deceleration is maximized by shutting off the rear pressure thereby balancing the front and rear forces, the cut-off valve actuation being determined by fine tuning of the e-valve.

5. The e-valve as claimed in Claim 1 and working thereof wherein when the cut-off valve is actuated, it will cut-off the fluid supply to rear brake circuit and no further pressure will raise in rear circuit during braking.

6. The e-valve as claimed in Claim 1 and working thereof wherein the cut-off valve will be ON continuously until brake pedal is released.

7. The e-valve as claimed in Claim 1 and working thereof wherein when brake pedal is released, a signal from brake light switch will go to the simple circuit board and the cut-off valve will be deactivated.

8. The e-valve as claimed in Claim 1 and working thereof wherein in case of one circuit failed condition the e-valve will take signal from a fluid level warning indicator and through a feedback arrangement will make the cut-off valve continuously ON there being no pressure cut-off to the rear circuit.