Air flow measuring device formed integrally with electronically controlled throttle body

An integrated air flow sensor comprising:

• a body forming air passage, an air flow rate detection means for detecting the air flow rate which flows in said air passage, and a throttle means controlled with an electric signal, for limiting said air flow rate by reducing the flow, said body, said air flow rate detection means and said throttle means being integrated;
• further comprising a pressure calculation means for calculating the pressure from the air flow rate detected by said air flow rate detection means, the engine speed, the reduction amount by said throttle means and the air temperature.

An integrated air flow sensor comprising:

• a body forming air passage, an air flow rate detection means for detecting the air flow rate which flows in said air passage, and a throttle means controlled with an electric signal, for limiting said air flow rate by reducing the flow, said body, said air flow rate detection means and said throttle means being integrated;
• further comprising a air flow rate calculation means for calculating the corrected air flow rate from the air flow rate detected by said air flow rate detection means, the engine speed, the reduction amount by said throttle means and the air temperature.

An integrated air flow sensor comprising:

• a body forming air passage, an air flow rate detection means for detecting the air flow rate which flows in said air passage, and a throttle means controlled with an electric signal, for limiting said air flow rate by reducing the flow, said body, said air flow rate detection means and said throttle means being integrated;
• further comprising an air flow rate calculation means for calculating the filtered air flow rate when the change speed in the reduction amount by said throttle means is less than a certain fixed value.

An integrated air flow sensor comprising:

• a body forming air passage, an air flow rate detection means for detecting the air flow rate which flows in said air passage, and a throttle means controlled with an electric signal, for limiting said air flow rate by reducing the flow, said body, said air flow rate detection means and said throttle means being integrated;
• further comprising an air flow rate calculation means for calculating the corrected air flow rate when the change speed in the reduction amount by said throttle means is more than a certain fixed value.

An integrated air flow sensor comprising:

• a body forming air passage, an air flow rate detection means for detecting the air flow rate which flows in said air passage, and a throttle means controlled with an electric signal, for limiting said air flow rate by reducing the flow, said body, said air flow rate detection means and said throttle means being integrated;
• further comprising two or more correction maps, and an air flow rate calculation means for calculating the air flow rate by using the correction map selected from said plural maps by an external signal.

An integrated air flow sensor comprising:

• a body forming air passage, an air flow rate detection means for detecting the air flow rate which flows in said air passage, and a throttle means controlled with an electric signal, for limiting said air flow rate by reducing the flow, said body, said air flow rate detection means and said throttle means being integrated;
• further comprising a circuit which can perform the detection of said air flow rate and the control of said throttle means together.

An integrated air flow sensor comprising:

• a body forming air passage, an air flow rate detection means for detecting the air flow rate which flows in said air passage, and a throttle means controlled with an electric signal, for limiting said air flow rate by reducing the flow, said body, said air flow rate detection means and said throttle means being integrated;
• further comprising a correction and control means for performing the correction of signals from said air flow rate detection means and pressure detection means and the control of said throttle means.

An integrated air flow sensor comprising:

• a body forming air passage, an air flow rate detection means for detecting the air flow rate which flows in said air passage, a throttle means controlled with an electric signal, for limiting said air flow rate by reducing the flow, and a pressure detection means for detecting the pressure at the downstream of said throttle means, said body, said air flow rate detection means, said throttle means and said pressure detection means being integrated;
• further comprising an air flow rate calculation means for calculating the corrected air flow rate pressure from the air flow rate detected by said air flow rate detection means, the pressure detection means for detecting the pressure at the downstream of said throttle means, the engine speed, the reduction amount by said throttle means and the air temperature.