How Automotive Industry Uses Various Valves

Many inventions have progressed for the better over time. This is true for automobile engines as well. Engines in today’s vehicles are more powerful, economical, and versatile than ever before. Today’s automotive engines can endure for years if properly maintained and cared for.

Car manufacturers have created and improved critical characteristics of their engines as engine technology has progressed. Engine manufacturers create different development and engineering curves in the area of valve technology.

The vast majority of individuals are ignorant of the complexities involved in valve technology. Even yet, if you’re a car aficionado, you’ve probably come across standard valve technology phrases at some point. In this post, we’ll look at valve technology and how it’s used in automobile engine parts.

What Valves Do In Your Car

The valves are located in the head of the engine and are responsible for allowing air and/or fuel to enter the cylinders for combustion. Intake valves are used to let the combustion exhaust out of the cylinders, while exhaust valves are used to let the combustion exhaust out of the cylinders.

Although valves may sound like a couple of horns in an orchestra, they are crucial to an engine’s power, economy, and emissions.

How Valves Work In Your Car 

The rotation of a camshaft with eccentric, egg-shaped lobes controls the engine valves. The upper section of the cam lobes’ egg shape presses on the valve as they rotate, causing it to open.

Four Types Of Valves Used In Automobile

  1. Sleeve Valve

The sleeve valve is so named because of its form. An automobile’s internal combustion engine is supposed to have a tube that fits between the cylinder wall and the piston. To work, this tube spins and/or slides. 

Ports on the side of the sleeve are designed to properly match with the exhaust ports as well as the cylinder inlets. The sleeve ensures that the gasses come out in a continuous motion due to the periodic motion. These valves perform admirably because they are quiet and simple to fabricate for the electric actuator valve manufacturers.

  1. Poppet Valve

Poppet valves are used in engines to regulate the amount of gas that flows into the engine. Poppet valves are sometimes known as mushroom valves because of the shape of their head and stem, which resembles a mushroom. The popping motion, which moves up and down, inspired the term poppet.

To guarantee optimal fitting, the valve is angled at a 30° to 45° inclination. This valve has a spring retainer lock groove on the stem. When employed in the exhaust, the built-up pressure aids in the seal. The pressure differential opens the valve seal as an intake valve.

  1. Butterfly Valves

Quarter-turn valves include butterfly valves. Butterfly valves have a disc-shaped obstructor, which distinguishes them from plug and ball valves. General-duty butterfly valves are referred to as resilient seated valves.

A single seal ring is used in these types of valves. This ring serves as a seal between the valve disc and the body. Between the valve body and the pipe flanges, it also serves as a seal. At specific angles, the valve starts and stops. When the butterfly valve’s disc is perpendicular to the flow direction, the flow is stopped in the engine. 

The flow goes through the valve and around the disc when the disc is parallel to the flow direction. Butterfly valves are more compact than ball and plug valves. These are utilized in huge pipes where the valve does the job without allowing the apparatus to become excessively heavy due to the valve’s weight.

  1. Rotary Valve

There are many different types of rotary valves. The rotation on which these valves rely is often limited to a 90-degree motion. They are sometimes known as quarter-turn valves. As a result, the quarter-turn is named. There are, however, rotary valves with a greater degree of rotation.

In addition, such valves have a number of positions that are actively used in normal operation. At 90 degrees, quarter-turn valves should be totally open, and at 0 degrees, they should be completely closed.

The various varieties of rotary valves contribute to the function’s adaptability. Rotary valves are, by default, simple to build and less expensive to manufacture than their equivalents. Rotary valves are commonly used in high-speed engines.

Modern Valve Technology In Cars

Modern engines may vary the time period of valve engagement based on the engine’s needs. When a motor is operating at a low RPM, for example, the valve opening requirements are different than when the engine is operating at a high RPM.

Types Of Modern Valve Engines

Modern valve technology is used in the following engines:

  • VTVT – Variable Timing Valve Train
  • VVT – Variable Valve Timing
  • VVT-i – Variable Valve Timing with Intelligence
  • Ti-VCT – Twin Independent Variable Camshaft Timing


Whether it is industrial machinery like an automatic screwing robotic machine, or automobiles, the smooth operation necessitates the use of valves. The bulkiness, efficacy, cost, and functionalities of valves used in the automotive sector are all factors to consider.

Leave a Comment

Leave a Reply

Your email address will not be published. Required fields are marked *