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BISON has been engaged in small diesel engine business for many years. Today, we have manufactured air-cooled diesel engines ranging from 4HP to 15HP. These four-stroke diesel engines are committed to providing the best diesel engine solutions and strive to be as friendly as possible to customers and the environment.
| DIESEL ENGINE | BS170F | BS178F | BS186FA | BS188F |
| Type | Single Cylinder, Air Cooled, 4-Stroke | |||
| Displacement (cc) | 211 | 296 | 418 | 456 |
| Output (HP) | 4.0 | 6.0 | 10 | 11 |
| Max power (KW) | 3.0 | 4.6 | 7.1 | 8.0 |
| Rated power (KW) | 2.5 | 4.2 | 6.5 | 7.5 |
| Rated speed (RPM) | 3000 / 3600 | 3000 / 3600 | 3000 / 3600 | 3000 / 3600 |
| Bore * stroke (mm) | 70*55 | 78*62 | 86*72 | 88*75 |
| Compression ratio | 20 : 1 | 20 : 1 | 19 : 1 | 19 : 1 |
| Ignition system | Compression Combustion | |||
| Starting system | Recoil start / Key start | |||
| Fuel tank volume (L) | 2.5 | 3.5 | 5.5 | 5.5 |
| G.W. (kg) | 27 | 33 | 48 | 49 |
| 20GP (set) | 330 | 260 | 180 | 180 |
| 40HQ (set) | 640 | 500 | 350 | 350 |
| Model | BS192F | BS195F | BS198F | BS1102F | BS2V98F |
| Type | Single-Cylinder, Air Cooled, 4-Stroke | Double Cylinder | |||
| displacement (cc) | 498 | 531 | 633 | 718 | 1326 |
| output (hp) | 11.8 | 12 | 13.2 | 15 | 30 |
| Max.output (kw) | 8.8 | 9 | 9.9 | 11.3 | 22 |
| Rated power (KW) | 8 | 8.5 | 9 | 10.3 | 20 |
| Rated speed (RPM) | 3000/3600 | 3000 | |||
| Bore * stroke (mm) | 92*75 | 95*75 | 98*84 | 102*88 | 98*88 |
| Starting system | Recoil start / Key start | ||||
| G.W. (kg) | 47 | 47 | 57 | 58 | 90 |
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A holistic solution to your most common questions about BISON small diesel engines.
Diesel engines are the same as gasoline engines, each working cycle is also composed of intake stroke, compression stroke, power stroke and exhaust stroke.
The operation of the diesel engine is as follows:
Intake: In the first stage, since the intake valve remains open and the piston is downward, air can enter the cylinder.
Compression: When the piston reaches bottom dead center and starts to move to the top, the intake valve closes, thereby compressing the air in the cylinder and significantly increasing the temperature.
Combustion: Shortly before reaching the top dead center, the fuel injector injects fuel into the combustion chamber, and the fuel ignites immediately after it comes in contact with the hot air. In cold weather, diesel engines use a component called a glow plug to help ignite the diesel.
Exhaust: After being ignited, the piston moves down, and due to inertia, it will return to the top dead center, thereby expelling the combustion gas and starting the cycle again.
It is a dense liquid fuel that is derived from petroleum and contains wax components. Diesel has always been considered a more economical fuel than gasoline and has more efficient performance per liter.
Compared with other fuels, diesel is less volatile and therefore has a lower risk of flammability.
Its composition is oily, which can better lubricate the metal parts in contact with it.
This is economical.
It consumes in a more stable and slow way.
Both small petrol and diesel engines work through internal combustion engines but in slightly different ways. A small petrol engine injects fuel and air into small metal cylinders. The piston compresses (squeezes) the mixture, and a tiny electrical spark from the spark plug ignites it. This makes the mixture explode, creating the power that pushes the piston down the cylinder and turns the crankshaft and gears.
Small diesel engines are similar but more straightforward. First, the pistons allow air into the cylinders and compress much more than a small petrol engine. In a small petrol engine, the fuel-air mixture is compressed to about a tenth of its original volume. But in a small diesel engine, the air is compressed 14 to 25 times.
Well, imagine how much heat is generated by forcing air into a space 14-25 times smaller than it usually takes. There is so much heat that the air becomes very hot - generally at least 500°C (1000°F), and sometimes even hotter. This controlled explosion causes the piston to be pushed down the cylinder, producing the power that drives the machine on which the engine is mounted. As the piston returns, the exhaust gas is pushed out through the exhaust valve, and the process repeats itself—hundreds or thousands of times per minute!
Small diesel engines are twice as efficient as small petrol engines - around 40-45% at best. In simple terms, this means you can go further on the same amount of fuel or get more miles for your money. There are several reasons.
First, they compress more and operate at higher temperatures. The basic theory of how a heat engine works, known as Carnot's rule, tells us that an engine's efficiency depends on how hot and cold it operates. Small diesel engines that cycle through more considerable temperature differences (higher hottest or lowest cooler temperature) are more efficient.
Second, because there is no spark plug ignition system, the design is more straightforward, and air can be compressed more efficiently, allowing the fuel to burn hotter and more thoroughly, releasing more energy.
Another critical factor is that diesel fuel carries slightly more energy per gallon than petrol because its molecules have more energy to lock their atoms together. In other words, diesel has a higher energy density than petrol.
Manufacturing company that makes small diesel engine product
wholesale nowSmall diesel engines, like small petrol engines, are internal combustion engines that convert chemical energy into mechanical energy. This process moves a piston up and down within the cylinder, resulting in motion that can be used for different applications.
Diesel engines can provide better running performance and higher fuel economy, making them more and more popular among end users. Today, small diesel engines are widely used in generator sets, pressure washers, and some agricultural and construction applications, or as small stationary generators (such as generators on yachts).
There are currently two types of diesel engines on the market. Two-stroke diesel engine completes the power cycle with two strokes of the piston when the crankshaft rotates one revolution, while the four-stroke diesel engine completes the cycle by rotating the crankshaft in four separate strokes. The two-cylinder diesel engine is easy to install, has low fuel consumption, and achieves maximum combustion efficiency.
Small diesel engines are reliable. They consist of a number of components, all of which must function properly for the engine to run. A breakdown of some of these small engines' most important parts can be found below.
The fuel system consists of the water separator, fuel tank, fuel feed pump (low pressure), filter, high-pressure pump, fuel injector, and cylinder. Essentially, the tank stores fuel, then a low-pressure pump pulls the fuel out of the tank through a filter/water separator, which pushes the fuel through another filter. From there, fuel pressure is raised by a high-pressure pump, either the fuel injection pump or the unit injector.
Lubrication systems play an essential role in small engines. It reduces wear on friction surfaces by placing an oil film between parts, reducing the power required to overcome friction and removing heat from pistons and other components in the engine. It also separates the cylinder and piston rings.
In this system, dust is kept out of the cylinder bores by air that passes through an air filter. Air from the air filter is compressed by the turbocharger, and air from the turbocharger is brought to the intake by the intake manifold. The camshaft regulates when the intake valve opens and closes, allowing air to enter the cylinder bore.
In this system, exhaust gas passes through a diesel particulate filter, which filters solids from the exhaust gas stream. These solids or particulates are ash and carbon. Filters must undergo a periodic cleaning process called regeneration to convert carbon into carbon dioxide through exposure to high temperatures.
The gas then passes through a selective catalytic reduction system that removes nitrogen oxides with the help of diesel exhaust. There is also an exhaust gas recirculation cooler, valve, and mixer. All of these devices are designed to reduce harmful emissions.
The cooling system helps maintain the proper engine temperature, so everything works properly. It keeps oil and engine components at the right temperature, which helps protect cylinder heads, cylinders, valves, and pistons. Small diesel engines have two different cooling types: air and water.
The recoil starter drives the flywheel to rotate, and the flywheel drives the crankshaft to rotate. This is what causes the piston to move in the cylinder. The piston compresses the air in the cylinder to generate heat, which ignites the fuel injected into the cylinder.
Due to two factors, a small diesel engine is more fuel-efficient and provides better fuel economy than a small petrol engine. The first is that it produces more power with less fuel thanks to its higher compression rating. The second is that it burns diesel fuel, which, due to its longer carbon chain than gasoline, has a higher energy density.
Remember, small diesel engines use compressed air to ignite the diesel fuel. Not having a spark plug provides a more specific benefit. These include reducing the incidence of possible electrical failures, reducing maintenance costs by not requiring ignition adjustments and replacements, improving reliability, and extending engine life.
Diesel fuel provides another advantage to diesel engines over small petrol engines. Diesel fuel is about 15% to 20% cheaper than petrol. It's worth explaining further that diesel is heavier and less volatile than petrol, making it easier to refine.
Small diesel engines provide better torque to the driveshaft than most small petrol engines. Features like slow fuel burn and high compression produce more torque.
Products running on small diesel engines, especially those with modern engine designs or turbocharging features, have a higher entry fee. Note that this is due to changes in supply and demand factors, not manufacturing costs or related technology development costs. BISON's small diesel engines are affordable and cost-effective.
Another disadvantage of small diesel engines is that while they are more durable and reliable than petrol engines, failure to keep up with regular maintenance schedules can lead to mechanical failure. Note that repairing this engine is more expensive as it is more technically and mechanically complex. Additionally, maintenance costs increase with each service.
Poor performance in cold weather is another disadvantage of small diesel engines. During low temperatures, diesel fuel tends to gel. More specifically, below 40 degrees Fahrenheit, certain hydrocarbons in diesel can become gelatinous. BISON install engine block heaters, glow plugs or keep the engine running in cold weather.
BISON has been producing high-performance diesel engines for many years. Professionals in each of our departments, basic research, development, production and after-sales support, are looking for processes to maximize customer value. We promise to provide diesel engines that meet your requirements under excellent quality control.
BISON provides a large number of original, aftermarket and remanufactured parts for various popular diesel engines to help you handle any diesel generator maintenance work. We have our own diesel engine production workshop, follow strict manufacturing processes, and continuously control the quality of our products.
In addition, we also provide water-cooled diesel engines. For our single-cylinder diesel engine built with direct injection technology, it can be started quickly and easily with just one pull.
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small diesel engine guides written by BISON experts
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