Find HS Code and trade information for intake manifold sensor

Intake Manifold Sensor

An intake manifold sensor is a component used in internal combustion engines to monitor various parameters within the intake manifold. These sensors provide crucial data to the engine control unit (ECU) for optimal engine performance, fuel efficiency, and emissions control.

Material:

• Housing: Typically constructed from durable plastics like nylon or phenolic resins to withstand engine temperatures and resist corrosion.
• Sensing Element: Materials vary based on the specific parameter measured, including:
  • MAP Sensors: Piezoresistive silicon diaphragms are common.
  • IAT Sensors: Thermistors (semiconductors whose resistance changes with temperature) are utilized.
  • MAF Sensors: Hot-wire or hot-film sensors (typically platinum or tungsten) are used.
  • TPS Sensors: Potentiometers (variable resistors) are common.
• Electrical Components: Copper wiring, circuit boards, and connectors.

Purpose:

The primary purpose of intake manifold sensors is to provide the ECU with real-time data regarding the conditions within the intake manifold. This data allows the ECU to accurately calculate the air-fuel mixture, ignition timing, and other engine parameters.

Function:

Different types of intake manifold sensors measure different parameters:

• Manifold Absolute Pressure (MAP) Sensor: Measures the absolute pressure within the intake manifold. Lower pressure indicates higher engine load.
• Intake Air Temperature (IAT) Sensor: Measures the temperature of the air entering the engine. Colder air is denser and allows for more efficient combustion.
• Mass Air Flow (MAF) Sensor: Measures the mass of air entering the engine. This is a more accurate measurement than volume, as it accounts for air density.
• Throttle Position Sensor (TPS): Detects the position of the throttle plate, indicating driver demand for power.
• Intake Valve Timing (IVT) Sensor: Monitors the position of the intake valves, particularly in engines with variable valve timing.

Usage Scenarios:

• Cold Starts: IAT sensors help the ECU enrich the fuel mixture during cold starts for easier ignition.
• Acceleration: MAF/MAP sensors provide data for increased fuel delivery during acceleration.
• Cruising: Sensors maintain optimal air-fuel ratios for fuel efficiency during steady-state cruising.
• Altitude Compensation: MAP sensors help the ECU adjust for changes in atmospheric pressure at different altitudes.
• Diagnostic Trouble Codes (DTCs): Sensors report malfunctions to the ECU, triggering DTCs and illuminating the check engine light.

Common Types:

• MAP Sensors: Single or dual-port designs.
• IAT Sensors: Integrated with the MAP sensor in some applications.
• MAF Sensors:
  • Hot-Wire MAF Sensors: A heated wire cools as air flows past it; the amount of current needed to maintain the wire's temperature is proportional to the airflow.
  • Hot-Film MAF Sensors: Similar principle to hot-wire, but uses a heated film.
  • Vane Air Flow Sensors (VAF): Older technology, less accurate than hot-wire/hot-film.
• Throttle Position Sensors (TPS): Single or dual-element designs.
• Intake Camshaft Position Sensors (ICP): Used in engines with variable valve timing.

Intake Manifold Sensor Classification

Based on the provided information, the classification of an intake manifold sensor falls under measuring or checking instruments, appliances and machines. Here's a breakdown of relevant HS codes:

• 9031808060: Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof: Other instruments, appliances and machines: Other Equipment for testing the characteristics of internal combustion engines: For testing electrical characteristics.

  • 90: Chapter 90 covers measuring, checking, testing, navigating and similar instruments and apparatus.
  • 31: Heading 9031 specifically relates to measuring or checking instruments, appliances and machines.
  • 80: Subheading 903180 denotes 'Other instruments, appliances and machines'.
  • 60: Further specifies 'Other Equipment for testing the characteristics of internal combustion engines: For testing electrical characteristics'. This code is applicable if the sensor primarily tests the electrical characteristics of the intake manifold.

• 9031808070: Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof: Other instruments, appliances and machines: Other Equipment for testing the characteristics of internal combustion engines: Other.

  • 90: Chapter 90 covers measuring, checking, testing, navigating and similar instruments and apparatus.
  • 31: Heading 9031 specifically relates to measuring or checking instruments, appliances and machines.
  • 80: Subheading 903180 denotes 'Other instruments, appliances and machines'.
  • 70: Further specifies 'Other Equipment for testing the characteristics of internal combustion engines: Other'. This code is applicable if the sensor tests characteristics other than electrical ones.

• 9032896085: Automatic regulating or controlling instruments and apparatus; parts and accessories thereof: Other instruments and apparatus: Other: Other.

  • 90: Chapter 90 covers measuring, checking, testing, navigating and similar instruments and apparatus.
  • 32: Heading 9032 specifically relates to automatic regulating or controlling instruments and apparatus.
  • 89: Subheading 903289 denotes 'Other instruments and apparatus'.
  • 60: Further specifies 'Other'. This code could be applicable if the sensor is used for automatic regulation or control.

• 9032896075: Automatic regulating or controlling instruments and apparatus; parts and accessories thereof: Other instruments and apparatus: Other: Process control instruments and apparatus: Other: Other.

  • 90: Chapter 90 covers measuring, checking, testing, navigating and similar instruments and apparatus.
  • 32: Heading 9032 specifically relates to automatic regulating or controlling instruments and apparatus.
  • 89: Subheading 903289 denotes 'Other instruments and apparatus'.
  • 60: Further specifies 'Process control instruments and apparatus'. This code could be applicable if the sensor is used for process control.

According to the provided reference material, the HS code options related to 'intake manifold sensor' are limited, with only the following 4 found.

Please note that the final HS code selection depends on the specific function and application of the sensor. If the sensor is used for testing electrical characteristics, 9031808060 is most appropriate. If it tests other characteristics, 9031808070 is more suitable. If it's used for automatic regulation or control, consider 9032896085 or 9032896075.