intake manifold

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intake manifold

The mechanic inspects the intake manifold in the engine bay.

Definition

Noun: - A component of an internal combustion engine: The intake manifold is a system of pipes or passages that distributes the air-fuel mixture (in carbureted engines) or just air (in fuel-injected engines) from the throttle body or carburetor to the intake ports of each cylinder.

Usage
  • The primary function of the intake manifold is to ensure an even and efficient distribution of the air or air-fuel charge to all cylinders.
  • It is a critical part of the engine's induction system, affecting performance, fuel efficiency, and emissions.
Examples
Advanced Usage
  • "Variable intake manifold": A design that changes the geometry or length of the manifold's passages to optimize engine performance at different RPM ranges.
    • The sports car uses a variable intake manifold to provide strong torque at low speeds and high power at high RPMs.
Variants and Related Words
  • Exhaust manifold (n): A component that collects exhaust gases from the cylinders and channels them to the exhaust pipe. It is the counterpart to the intake manifold in the engine's exhaust system.
  • Manifold (n): In engineering, a pipe or chamber with multiple outlets or inlets for connecting one pipe to several others. The intake manifold is a specific type of manifold.
  • Plenum (n): In some engine designs, a chamber in the intake manifold where air pressure is slightly higher before distribution to the cylinders.
Synonyms
  • Inlet manifold: A less common but technically accurate synonym, especially in British English.
  • Induction manifold: A general term emphasizing its role in the engine's air induction process.
Related Phrases
  • Intake manifold gasket: The seal placed between the intake manifold and the cylinder head to prevent vacuum and coolant leaks.
    • A failed intake manifold gasket can cause the engine to run poorly.
  • Intake manifold runner: An individual passage or tube within the manifold that leads to a specific cylinder.
    • The design of the intake manifold runners affects the engine's torque curve.
intake manifold

The mechanic inspects the intake manifold in the engine bay.

Noun
  1. a manifold consisting of a pipe to carry fuel to each cylinder in an internal-combustion engine