Fluid injection system for internal combustion engines

Claim 2

In a vehicle having an internal combustion engine with an intake system, a throttle control, and a transmission with gearing, apparatus for selectively adding cooling fluid into the intake system comprising: a fluid container; a filter for filtering fluid passing from said container; regulating means regulating addition of the fluid from said container to the intake system, said regulating means having a normally closed control valve allowing fluid flow to the intake system when open and preventing fluid flow to the intake system when closed; wherein said regulating means also includes a second valve, said second valve allowing fluid from said container to flow to the intake system only at high intake manifold vacuum. sensing means to sense vehicle operating conditions; means responsive to said sensing means to selectively transmit an activating signal to open said control valve; and dispersing means positioned in the intake system to disperse within the intake system the fluid from said container which has been allowed to be added to the intake system by said regulating means.

Claim 3

Apparatus as set out in claim 1, also including means responsive to vacuum to close said control valve wHen pressure is removed from the throttle of the internal combustion engine.

Claim 4

Apparatus as set out in claim 2, said dispersing means in an ultrasonic atomizer for converting the fluid added to the intake system into a mist.

Claim 5

Apparatus as set out in claim 3, also including a pump for aiding flow of fluid from said container to the intake system, said sensing means senses engine temperature and vehicle speed, and said means to selectively transmit an activating signal to open said control valve also governs operation of said pump and said atomizer.

Claim 6

Apparatus as set out in claim 2, wherein said second valve of said regulating means also allows fluid from said container to flow to the intake system at low intake manifold vacuum, and wherein said dispersing means is an ultrasonic atomizer for converting the fluid added to the intake system into a mist.

Claim 7

Apparatus as set out in claim 5, also including a pump for aiding flow of fluid from said container to the intake system, said sensing means senses engine temperature and vehicle speed, and said means to selectively transmit an activating signal to open said control valve also governs operation of said pump and said atomizer.

Claim 8

Apparatus as set out in claim 1, wherein said regulating means also includes a second valve, said second valve allowing fluid from said container to flow to the intake system only at high intake manifold vacuum.

Claim 9

Apparatus as set out in claim 1, wherein said regulating means also includes a second valve, said second valve allowing fluid from said container to flow to the intake system only at high or low intake manifold vacuum.

Claim 10

Apparatus as set out in claim 1, wherein said dispersing means is an ultrasonic atomizer for converting the fluid added to the intake system into a mist.

Claim 11

In a vehicle having an internal combustion engine with an intake system, a throttle control, and a transmission with gearing, apparatus for selectively adding cooling fluid into the intake system comprising: a fluid container; a filter for filtering fluid passing from said container; regulating means regulating addition of the fluid from said container to the intake system, said regulating means having a normally closed control valve allowing fluid flow to the intake system when open and preventing fluid flow to the intake system when closed wherein said regulating means also includes a second valve, said second valve allowing fluid from said container to flow to the intake system only at high intake manifold vacuum; sensing means to sense vehicle operating conditions, said sensing means transmitting input signals representative of the conditions sensed; input receiving means for receiving input signals from said sensing means, said input receiving means selectively transmitting an activating signal to open said control valve in response to the input signals; and dispersing means positioned in the intake system to disperse within the intake system the fluid from said container which has been allowed to be added to the intake system by said regulating means.

Claim 12

In a vehicle having an internal combustion engine with an intake system, a throttle control, and a transmission with gearing, apparatus for selectively adding cooling fluid into the intake system comprising: a fluid container; a filter for filtering fluid passing from said container; regulating means regulating addition of the fluid from said container to the intake system, said regulating means having a normally closed control valve allowing fluid flow to the intake system when open and preventing fluid flow to the intake system when closed wherein said regulating means also includes a second valve, said second valve allowing fluid from said container to flow to the intake system only at high intake manifold vacuum; sensing means to sense vehicle operating conditions, said sensing means transmitting input signals representative of the conditions sensed; input receiving means for receiving input signals from said sensing means, said input receiving means selectively transmitting an activating signal to open said control valve in response to the input signals; and dispersing means positioned in the intake system to disperse within the intake system the fluid from said container which has been allowed to be added to the intake system by said regulating means.

Claim 13

Apparatus as set out in claim 10, wherein said dispersing means is an ultrasonic atomizer for converting the fluid added to the intake system into a mist.

Claim 14

Apparatus as set out in claim 10, wherein said second valve of said regulating means also allows fluid from said container to flow to the intake system at low intake manifold vacuum.

Claim 15

Apparatus as set out in claim 12, also including a pump for aiding flow of fluid from said container to the intake system, and wherein said dispersing means is an ultrasonic atomizer for converting fluid added to the intake system into a mist, said input receiving means also activates said pump and said atomizer, and said input receiving means includes means to activate said pump and said atomizer and open said control valve only when all the input signals are representative of all said sensed vehicles operating conditions being in excess of Preselected values.

Claim 16

Apparatus as set out in claim 13, wherein said sensing means senses engine temperature, engine RPM, intake manifold vacuum, throttle position, and transmission gear position, and wherein said pump is a centrifugal type.

Claim 17

Apparatus as set out in claim 13, wherein the internal combustion engine is provided with fuel injectors for fuel injecting the engine and said input receiving means also transmits signals to open the fuel injectors of the engine in response to the input signals from said sensing means.

Claim 18

Apparatus as set out in claim 10, also including a pump for aiding flow of fluid from said container to the intake system, and wherein said dispersing means is an ultrasonic atomizer for converting fluid added to the intake system into a mist, said input receiving means also activates said pump and said atomizer, and said input receiving means includes means to activate said pump and said atomizer and open said control valve only when all the input signals are representative of all said sensed vehicle operating conditions being in excess of preselected values.

Claim 19

Apparatus as set out in claim 16, wherein said sensing means senses engine temperature, engine RPM, intake manifold vacuum pressure, throttle position, and transmission gear position, and wherein said pump is a centrifugal type.

Claim 20

Apparatus as set out in claim 16, wherein the internal combustion engine is provided with fuel injectors for fuel injecting the engine and said input receiving means also transmits signals to open the fuel injectors of the engine in response to the input signals from said sensing means.

Claim 23

The method of claim 19, further including the steps of: selectively pumping the fluid from the fluid container in response to the sensed vehicle operating conditions; filtering the fluid passing from the fluid container; providing a normally closed second valve for regulating flow of fluid from the container to the intake system, the second valve preventing flow into the intake system when closed; and opening the second valve in response to intake manifold vacuum.

Claim 24

The method of claim 19, wherein the vehicle operating conditions comprise engine temperature and vehicle speed, and the second valve only opens in response to high or low manifold vacuum.

Claim 25

The method of claim 19, further including the steps of: closing the control valve and shutting off the pumping and atomizing when vehicle operating conditions are outside the specified range, and closing said second valve when vacuum is within a specified range of manifold vacuum.