Hey there! As a supplier of engine parts, I've been dealing with all sorts of components for ages. Today, I wanna chat about one of the key parts in an engine - the connecting rods.
So, what exactly are connecting rods and what do they do in engine parts? Well, let's start with a quick overview. Connecting rods are like the middlemen in an engine. They connect the piston to the crankshaft, and that's a super important job.
The Basics of Connecting Rods
Connecting rods are typically made of high - strength materials like forged steel or sometimes aluminum. They have a small end and a big end. The small end is connected to the piston via a piston pin, and the big end is split into two parts so it can be attached to the crankshaft journal.
When the engine is running, the pistons move up and down in the cylinders due to the combustion process. The connecting rods transfer this linear motion of the pistons into rotational motion of the crankshaft. It's like a conversion process. The up - and - down movement of the pistons is turned into the spinning motion that eventually powers the wheels of your vehicle or whatever the engine is driving.
The Role in the Combustion Process
Let's dig a bit deeper into how connecting rods function during the combustion process. The combustion process in an engine has four main strokes: intake, compression, power, and exhaust.
During the intake stroke, the piston moves down, creating a vacuum in the cylinder. The intake valve opens, and the air - fuel mixture is drawn into the cylinder. The connecting rod follows the piston's downward movement, allowing the piston to move freely.
In the compression stroke, the piston moves back up, compressing the air - fuel mixture. The connecting rod is responsible for transmitting the force from the piston to the crankshaft as the piston is pushed upwards. This compression is crucial because it increases the pressure and temperature of the air - fuel mixture, which is necessary for efficient combustion.
The power stroke is where the magic happens. The spark plug ignites the compressed air - fuel mixture, and the resulting explosion forces the piston down with a huge amount of force. The connecting rod takes this force and transfers it to the crankshaft, making the crankshaft rotate. This rotation is what generates the power that can be used to do work, like moving a car.
Finally, in the exhaust stroke, the piston moves back up again, pushing the burned gases out of the cylinder through the open exhaust valve. The connecting rod helps the piston complete this upward movement, getting rid of the waste gases so the cycle can start all over again.
Importance of Connecting Rod Design
The design of connecting rods is super important. They need to be strong enough to handle the high forces generated during the power stroke. At the same time, they also need to be lightweight to reduce the overall weight of the engine and improve its efficiency.
Engineers spend a lot of time optimizing the shape and size of connecting rods. For example, some connecting rods have an I - beam or H - beam cross - section. These shapes provide high strength while keeping the weight down. The length of the connecting rod also matters. A longer connecting rod can reduce the side forces on the piston, which can improve engine durability and performance.
Common Issues with Connecting Rods
Like any engine part, connecting rods can have problems. One common issue is rod bearing failure. The rod bearings are located at the big end of the connecting rod, and they allow the connecting rod to rotate smoothly on the crankshaft journal. If the bearings wear out or get damaged, it can cause a knocking noise in the engine. This is a serious problem because if left untreated, it can lead to the connecting rod breaking, which can cause catastrophic engine failure.
Another issue is connecting rod bending. This can happen if the engine experiences a severe shock, like a misfire or a water ingestion. A bent connecting rod can cause uneven piston movement, which can lead to poor engine performance, increased fuel consumption, and even damage to other engine components.
Our Engine Parts Offerings
As an engine parts supplier, we've got a wide range of high - quality engine components, including connecting rods. But that's not all! We also offer other essential parts like the Turbo Pressure Sensor / 22422785 Volvo B/FH/FL/FM/VM. This sensor helps to measure the turbocharger boost pressure, which is crucial for the engine's performance and fuel efficiency.
We also have the Volvo 21596642, 20574700, 21452473 Control Valve. This control valve plays a key role in regulating the flow of fluids or gases in the engine, ensuring that everything runs smoothly.
And if you're in need of an Injection Sleeve Kit 85104134 7485104134 85124276, we've got you covered. This kit is important for the fuel injection system, which is responsible for delivering the right amount of fuel to the engine at the right time.


Why Choose Our Parts?
Our parts are made from top - quality materials and are designed to meet or exceed the original equipment manufacturer (OEM) specifications. We understand that reliability is key when it comes to engine parts, and that's why we put our parts through rigorous testing to ensure they perform well in real - world conditions.
Whether you're a mechanic looking for parts to repair an engine or a vehicle owner who wants to upgrade your engine's performance, we've got the right parts for you. Our team of experts is always ready to help you find the perfect part for your specific needs.
Let's Connect
If you're interested in purchasing any of our engine parts, we'd love to hear from you. We're here to make the buying process as easy and hassle - free as possible. Just reach out to us, and we'll work with you to get the parts you need at a great price.
References
- "Automotive Engine Design" by Gordon Blair
- "Internal Combustion Engine Fundamentals" by John Heywood



