System, method, and device for controlling a throttle response of a vehicle

Patent metadata

Field	Value
Publication number	US-12529343-B2
Application number	US-202318515918-A
Country	US
Kind code	B2
Filing date	Nov 21, 2023
Priority date	Nov 21, 2023
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

Methods, systems, and devices for a throttle response control system that controls the rate at which a throttle opens. The throttle response control system includes one or more sensors and an electronic control unit connected to the sensors, the one or more sensors being configured to detect an air temperature in an intake hose, an engine speed, and an air pressure in the intake manifold. The electronic control unit is configured receive data from the one or more sensors and to activate a rate limit logic when the air temperature in the intake hose and the engine speed are greater than a temperature threshold and an engine speed threshold, respectively, and the air pressure in the intake manifold is less than a pressure threshold, causing the throttle to slow the rate at which the throttle opens based on the air temperature in the intake hose.

First claim

What is claimed is:

1 . A throttle response control system for a vehicle, comprising:
an intake hose configured to receive air; a throttle coupled to the intake hose and configured to open and close at a rate of speed and receive the air from the intake hose; a first temperature sensor coupled to the intake hose and configured to detect an air temperature in the intake hose; a memory configured to store a temperature threshold; and an electronic control unit (ECU) coupled to the throttle and configured to:
determine an intake hose temperature from data from the first temperature sensor;
determine the intake hose temperature is greater than the temperature threshold indicating the intake hose is at risk of restricting airflow; and
activate a rate limit logic when the intake hose temperature is greater than the temperature threshold to cause the throttle to open at a rate of speed that is inversely proportional to the intake hose temperature.

2 . The throttle response control system of claim 1 , wherein:
the throttle is further configured to receive a target throttle angle and open to the target throttle angle; the ECU is further configured to provide the target throttle angle to the throttle; and the rate limit logic causes the throttle to slow the rate at which the throttle opens to the target throttle angle.

3 . The throttle response control system of claim 1 , further comprising:
an intake manifold coupled to the throttle, and configured to receive the air from the throttle; and a first pressure sensor configured to detect an air pressure in the intake manifold, wherein:
the memory is further configured to store a first pressure threshold,
the ECU is further configured to receive data from the first pressure sensor and determine an intake pressure, and
activating the rate limit logic is further based on the intake pressure being less than the first pressure threshold.

4 . The throttle response control system of claim 2 , further comprising a second temperature sensor coupled to the intake manifold and configured to detect an air temperature in the intake manifold, wherein the intake hose temperature is the greater of the air temperature in the intake hose and the air temperature in the intake manifold.

5 . The throttle response control system of claim 3 , further comprising a second pressure sensor configured to detect an air pressure in the intake hose, wherein:
the memory is further configured to store a second pressure threshold, and the ECU is further configured to deactivate the rate limit logic if the air pressure in the intake hose is greater than the second pressure threshold.

6 . The throttle response control system of claim 3 , further comprising:
an engine coupled to the intake manifold; and an engine speed sensor configured to detect an engine speed of the engine, wherein:
the memory is further configured to store an engine speed threshold,
the ECU is further configured to receive data from the engine speed sensor, and
activating the rate limit logic is further based on the engine speed of the engine being greater than the engine speed threshold.

7 . The throttle response control system of claim 6 , wherein opening at the rate of speed that is inversely proportional to the intake hose temperature is further based on the engine speed and the air pressure in the intake manifold.

8 . The throttle response control system of claim 6 , wherein the temperature threshold, the first pressure threshold, the second pressure threshold, and/or the engine speed threshold are based on a material the intake hose is made of.

9 . A throttle control system for a vehicle, comprising:
an intake hose configured to receive air; a throttle coupled to the intake hose and configured to open and close at a rate of speed and receive the air from the intake hose; one or more sensors configured to detect an intake air temperature of the vehicle; and an electronic control unit (ECU) coupled to the throttle and configured to:
determine a throttle rate limit based on the intake air temperature from the one or more sensors, the throttle rate limit being a limit on the rate of speed at which the throttle opens; and
control the rate of speed at which the throttle opens based on the throttle rate limit when the intake air temperature is greater than a temperature threshold indicating the intake hose is at risk of restricting airflow.

10 . The throttle control system of claim 9 , wherein the intake air temperature is an air temperature in the intake hose.

11 . The throttle control system of claim 9 , further comprising an engine coupled to the throttle, wherein:
the one or more sensors are further configured to detect an engine speed of the engine, and determining the throttle rate limit is further based on the engine speed of the engine.

12 . The throttle control system of claim 11 , further comprising an intake manifold coupled to the engine and the throttle, and configured to receive the air from the throttle, wherein:
the one or more sensors are further configured to detect an intake air pressure of the vehicle, and determining the throttle rate limit is further based on the intake air pressure.

13 . The throttle control system of claim 11 , further comprising a memory configured to store one or more temperature thresholds, engine speed thresholds, and pressure thresholds, wherein determining the throttle rate limit is further based on the one or more temperature thresholds, the one or more engine speed thresholds, and the one or more pressure thresholds.

14 . The throttle control system of claim 12 , wherein the intake air temperature is the greater of the air temperature in the intake hose and an air temperature in the intake manifold.

15 . The throttle control system of claim 12 , wherein the intake air pressure is an air pressure in the intake manifold.

16 . The throttle control system of claim 12 , wherein the one or more sensors includes a first temperature sensor coupled to the intake hose, a second temperature sensor coupled to the intake manifold, a first pressure sensor coupled to the intake manifold, a second pressure sensor coupled to the intake hose, and an engine speed sensor coupled to the engine.

17 . A method for controlling a throttle response of a vehicle having a throttle, the method comprising:
storing, in a memory, a temperature threshold and a pressure threshold; receiving, by an electronic control unit (ECU), an accelerator pedal input via an accelerator pedal sensor, the accelerator pedal input corresponding to a target throttle angle; receiving, by the ECU, an intake air temperature of the vehicle via one or more temperature sensors; receiving, by the ECU, an intake air pressure of the vehicle via one or more pressure sensors; determining the intake air temperature is greater than the temperature threshold indicating an intake hose of the vehicle is at risk of restricting airflow; and activating, by the ECU, a rate limit logic when the intake air temperature is greater than the temperature threshold and the intake air pressure is less than the pressure threshold to cause the throttle to open at a rate that is inversely proportional to the intake air temperature.

18 . The method of claim 17 , further comprising:
storing, in the memory, an engine speed threshold; and receiving, by the ECU, an engine speed reading of the vehicle via an engine speed sensor, wherein activating the rate limit logic is further based on the engine speed of the vehicle being gre

Assignees

• Toyota Eng & Mfg North America
• Toyota Motor Co Ltd

Inventors

• Ross Monica M
• Munson Garrett P
• Mcjunkin Adam C
• Amano Shigeki
• Tanaka Shogo
• Anami Takahiro
• Nakamura Yoshihisa

Classifications

• F02D2009/0235

  Throttle control functions · CPC title

• F02D2009/0225

  Intake air or mixture temperature · CPC title

• F02D2200/0414

  Air temperature · CPC title

• F02D41/0002 Primary

  Controlling intake air · CPC title

• F02D41/10

  for acceleration · CPC title