 Arm exercising apparatus |
| It is the object of the present invention to provide optimum toning to the bicep, tricep and ... |
|
| Rotary exercise machine |
| In view of the foregoing disadvantages inherent in the known types of aerobic and anaerobic ... |
|
| Current limiting impedance network for dryer control |
| The embodiments of the invention in which an exclusive property or privilege is claimed are defined ... |
|
| Method and apparatus for determining boiling points of liquids |
| OF THE SPECIFIC CONSTRUCTION AND OPERATION OF A PREFERRED EMBODIMENT System Construction As ... |
|
| Controlling superheat in a refrigeration system |
| The present invention provides a unique and novel way of electrically controlling the flow of ... |
|
| Thermostatic expansion valve with electronic controller |
| Referring now to FIG. 1, the control system of the present invention, indicated generally at 10, ... |
|
| Air conditioner for vehicle, using flammable refrigerant |
| In light of the above-described problem, the present invention has an object of providing an air ... |
|
| Convective air flow dynamic calorimeter |
| The convective air flow dynamic calorimeter of the present invention includes a combustion chamber ... |
|
| System and device for detecting the forming of depot |
| I claim: 1. System for detecting the forming of depot inside a transport channel for transporting ... |
|
| Hydraulic diffusion flash mixing |
| What is claimed is: 1. Apparatus for injecting and mixing chemicals in a liquid stream comprising a ... |
|
|
Ultrasonic device for the determination of the rate of air flow in the inlet duct of an internal combustion engine
| Details |
Inventors: Husse, Massimo;
Assignee: FIAT Societa per Azioni (Turin, IT)
Primary Examiner: Ruehl; Charles A.
Assistant Examiner:
Attorney, Agent or Firm: Sughrue, Rothwell, Mion, Zinn and Macpeak
A device for determining the rate of flow of air in the intake duct of an internal combustion engine comprises a detector duct of generally rectangular cross section housing two ultrasonic detectors one at each end, lying adjacent the detector duct is an intake duct having an inlet air filter which also serves as an ultrasonic acoustic filter. Adjacent ends of the intake and detector ducts are joined by a deflector which turns the air through 180.degree. as it passes from the intake duct to the detector duct. Within the deflector are fins which guide the air and turn it with the minimum of pressure loss and turbulence; adjacent the deflector in the intake duct is located a set of fins serving to diffuse the air as it passes, to reduce any temperature or velocity gradient across its width, and adjacent the deflector in the detector duct is located a set of fins serving to guide the air stream and reduce turbulence maintaining the even pressure and temperature across the stream. |
|
DETAILED DESCRIPTION I Claim: 1.
A device for determining, by ultrasonic means, the rate of air flow in the inlet duct of an internal combustion engine, comprising: a detector duct of generally rectangular cross section, two piezo-electric transducers of ultrasonic type situated at respective opposite ends of said detector duct, an electronic circuit connected to the outputs from said ultrasonic piezo-electric transducers, said electronic circuit operating to determine the air flow rate from the output signals from said ultrasonic piezo-electric transducers, an intake duct of generally rectangular cross section extending adjacent said detector duct, a U-shape deflector joining one end of said intake and detector ducts together, a first acoustic filter connected to said intake duct and serving to absorb the ultrasonic frequency components of noise generated externally of said device, a first set of fins located in said intake duct and shaped so as to render substantially uniform, across the air stream in said intake duct, both the air speed and the temperature of the air stream flowing therepast, a second set of fins located in said U-shape deflector for diverting the air flow from said intake duct into said detector duct, a third set of fins located in said detector duct for aligning the stream lines of fluid flowing therepast, a flexible sleeve connected to said detector duct, means for joining said flexible sleeve to the inlet duct of the engine, and a second acoustic filter for absorbing the ultrasonic frequencies of noise generated by the engine itself.
Description:
The present invention relates to an ultrasonic device for the determination of the rate of air flow in the inlet duct of an internal combustion engine, which is particularly suitable for fuel injection engines which are controlled by the device itself.
Ultrasonic devices for the determination of the rate of air flow in an inlet duct are known as such: these devices are usually positioned within the inlet duct or pipe of the engine
|
| Related patents |
|
|
Treadmill frame and roller bracket assembly
A treadmill has a frame with a left and a right extension. The extensions are spaced apart from each other and are in substantial alignment. The left and right ...
|
|
|
Method and device for measuring the correction factor
OF THE INVENTION In FIG. 1 numeral 1 designates a hollow glass tube which is sealed at one end 2. A hollow 3 in the glass tube 1 is formed so that it has its largest ...
|
|
|
Method and means for detection of hydrogen attack by ultrasonic wave velocity measurements
OF ILLUSTRATIVE EMBODIMENTS FIGS. 1A and 1B illustrate non-destructive testing techniques utilizing ultrasonic waves in measuring attenuation or velocity and wall ...
|
|
|
Training device for football players
The present invention comprises a generally rigid frame, the frame defining a track upon which a carriage is constrained to move. The track has a horizontally-disposed ...
|
|
|
Foldable body building device
OF THE INVENTION As shown in FIGS. 1-5, a body building device 10 embodied in the present invention comprises the component parts which are described hereinafter. A ...
|
|
|
Movable stand
The present invention is directed to a movable stand made of a base member having a flat bottom surface adapted to rest on the ground and with a pair of rotatable wheels ...
|
|
|
Basketball goal support having removable ballast and continuously adjustable pole
The present invention provides a basketball goal support which is easily transported, and which also provides for selection of a wide variety of height adjustments for ...
|
|
|
Punching bag
Therefore, the main object of the present invention is to provide a punching bag which can provide a realistic feeling experienced during boxing, which has a simple ...
|
|
|
Multifunctional exercise device
1. Purposes of the Invention It is an object of this invention to provide a multifunctional exercise device which maximises the number of exercises possible with full ...
|
|
|
Exercising device
It is an object of this invention to provide an exercising device which assists a user in doing push-ups. It is a further object of this invention to provide an ...
|
|
|
Exercise Devices 
