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Showing posts from May, 2020

Engine Mounts (Seating)

An engine mount is the part that holds the engine in your car. In most cars, an engine and transmission are bolted together and held in place by three or four mounts. The mount that holds the transmission is called the transmission mount, others are referred to as engine mounts. In our Nigerian street lingo, this is more commonly referred to as "engine seat" or "engine seating". Toyota Corolla engine mounts A Hyundai engine mount One part of the engine mount is bolted to the car body or frame. Another part holds the engine. An engine is a source of vibration, as it has many moving and rotating parts. The job of an engine mount is not only to hold the engine in place, but to reduce the engine vibration felt inside the car. Engine mounts are made with a rubber material so that there is no direct metal-to-metal contact between the engine and the car body.  A Toyota Camry transmission mount To further dampen the vibration, some engine mounts are filled with liquid. A li

Car 101: OHV vs OHC vs SOHC vs DOHC Engines.

The main difference is in the placement of the camshaft.  OHV means Over Head Valve. Although almost all modern car engines have valves placed in the cylinder head The term OHV is used to describe a pushrod engine, with the camshaft placed in the cylinder block.  OHC stands for Over Head Cam, or the camshaft is installed in the cylinder head. SOHC means Single Overhead Cam, while DOHC means Double Overhead Cam. Which one is better? It's always a heated argument. Muscle car fans will swear by an old-school pushrod, while younger car enthusiasts will say that nothing beats the twin-cam (DOHC). Each design has its pluses and minuses.  OHV or Pushrod engine An OHV engine animated diagram In an OHV engine, the camshaft is placed inside the block and the valves are operated through lifters, pushrods and rocker arms. This mechanism is called a valvetrain. An OHV design has been successfully used for many years. Most early American cars had OHV engines and they are still

Car 101: The Four Stroke Cycle Engine

So now that we know all the basic parts of the engine, let’s take a look at the movement that actually makes our car move: the four-stroke cycle. Please read our earlier article :  The anatomy of the engine . Each piston travels through four strokes to complete a single cycle. Any given cycle is the succession of operations that are constantly being repeated in a cylinder when the engine is running. And a stroke can be defined as the piston moving from the point where it’s the highest in the cylinder to the lowest point in the cylinder, or vice-versa. The above illustration shows the four-stroke cycle in a single cylinder. This is going on in the other cylinders as well. Engines may have 3, 4, 6, 8, 12 or 16 cylinders in "V" or "W" configurations. Repeat this cycle a thousand times in a minute, and you get a car that moves. More schematics below; Twitter and Instagram; @VverteAutoSevcs Email; vverteautosevcs@gmail.com Phone; 09137

Car 101: The Engine (PMS)

The engine is the heart of your car. It is a complex machine built to convert heat from burning fuel into the force that turns the road wheels. A V6 engine To understand the engine fully, it is necessary to understand the individual components and related terminologies. Don't worry about getting confused, it's simple. If you're new to this, read through the whole thing to get an overall grasp, and then read it again so you have a basic understanding of each piece as it’s being talked about. Engine Block (Cylinder Block) An engine block The engine block is the foundation of an engine. Most engine blocks are cast from an aluminium alloy, but iron is still used by some manufacturers. The engine block is also referred to as the cylinder block because of the big hole or tubes called cylinders that are cast into the integrated structure. The cylinder is where the engine’s pistons slide up and down. The more cylinders an engine has the more powerful it is. In

Car 101 : A Brief History of the Internal Combustion Engine

An internal combustion engine is called an “internal combustion engine” because fuel and air combust inside the engine to create the energy to move the pistons, which in turn move the car. Contrast that to an external combustion engine, where fuel is burned outside the engine and the energy created from that burning is what powers it. Steam engines are the best example of this. Coal is burned outside of the engine, which heats water to produce steam, which then powers the engine. A steam engine Most people think that steam-powered external combustion engines came before the internal combustion variety. The reality is that the internal combustion engine came first. The ancient Greeks messed around with steam-powered engines, but nothing practical came from their experiments. In the 16th century, inventors created a form of internal combustion engine using gunpowder as the fuel to power the movement of the pistons. Actually, it wasn’t the gunpowder that moved them. The way this early int

The Air Filter

For your engine to run, it needs air. The air mixes with gas, the spark plug gives a spark, and-voila you’ve got internal combustion. For an engine to run efficiently, the air that it takes in needs to be as clean as possible. However, the air outside is full of junk that doesn’t burn cleanly or evenly at all.  Dirt, pollen, insects and bird feathers are just some the things your engine will suck in to create the controlled explosion that moves your motor.  That is bad for your engine. An air filter Air filters are designed to prevent this from happening. Air filters are connected to the engine’s intake manifold. Most filters are rectangular (older cars that have carburettors use a donut-shaped air filter) and are made of a porous, paper-like material, folded like an accordion. The filter prevents dirt and other particulates from getting into your engine while allowing the clean air through. Simple, yet effective. Why Do You Need to Change Your Air Filter Regularly? A dirty air filter

Mass Air Flow Sensor: What It Is and How To Clean

A mass airflow sensor (MAS) determines the mass of air entering a vehicle's fuel injection engine, and passes that data to the Engine Control Unit, or ECU. The air mass information is necessary for the ECU to correctly balance and deliver the correct amount of fuel to the engine. When a vehicle's mass airflow sensor is faulty or defective it can cause a variety of problems, and usually results in very poor performance from your engine. An airflow sensor There are several designs of MAF sensors, but the most common by far is the hot wire MAF sensor. The hot wire MAF has two sensing wires. One wire is heated and the other is not. The microprocessor (computer) inside the MAF determines the amount of air entering the engine by how much current is required to keep the hot wire about 200 ℉ hotter than the cold wire. Whenever the temperature difference between the two sensing wires changes, the MAF will either increase or decrease the current to the heated wire. This equates to more a