Three Kinds Of Engine Brake System

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Engine braking, also known as engine retarder, is a relatively low-cost auxiliary brake that is now standard on many heavy duty trucks .


1. Exhaust brake

Exhaust brake is one of the most familiar forms. It is also very simple. It is installed by adding a butterfly valve to the exhaust pipe, and increasing the pressure of the exhaust stroke by closing the valve, and using the generated negative pressure to obtain the system. power. The cost is relatively low and the structure is simple.

This device is almost standard in domestic trucks, including light trucks. However, the exhaust brake is easily affected by factors such as damage to the exhaust manifold gasket, air leakage from the butterfly valve, unstable operation, and low braking power, which cannot meet the demand of heavy-duty trucks.


special truck manufacture



2. Deflated engine brake

Deflated engine braking, also known as exhaust valve braking, is divided into passive and active.

Passive requires an exhaust brake butterfly valve to match. When the engine brake switch is actuated, the exhaust brake butterfly valve is first closed, so that a high back pressure is formed in the exhaust pipe of the vehicle, so that the exhaust valve opens at a small angle, and then an exhaust mechanism is caused by a set of actuators. This valve opening is maintained during each stroke, and the compressed air leaks out from the exhaust valve during the entire compression stroke, reducing the energy returned to the piston to achieve the effect of braking deceleration, but the passive butterfly valve is affected by the working state. Large, especially when the engine speed is relatively low, the effect is relatively poor.

Passive requires an exhaust brake butterfly valve to match. When the engine brake switch is actuated, the exhaust brake butterfly valve is first closed, so that a high back pressure is formed in the exhaust pipe of the vehicle, so that the exhaust valve opens at a small angle, and then an exhaust mechanism is caused by a set of actuators. This valve opening is maintained during each stroke, and the compressed air leaks out from the exhaust valve during the entire compression stroke, reducing the energy returned to the piston to achieve the effect of braking deceleration, but the passive butterfly valve is affected by the working state. Large, especially when the engine speed is relatively low, the effect is relatively poor.


Braek system on special truck



3. Compression release

Compressed release engine braking is the current mainstream engine braking technology, and it is also the one with the highest braking power and efficiency. When the control switch is turned on, the engine exhaust valve is opened near the top dead center of the compression stroke, and the high pressure gas formed during the compression stroke is discharged out of the engine cylinder. In this way, most of the energy absorbed by the compressed gas is emitted, and only a small portion of the residual energy pushes the engine piston back. As the engine repeats, the inertia of the vehicle as it descends will be dissipated by the engine's compression-release action, eventually decelerating the vehicle.

Simply put, compression-release engine braking is to turn the engine into an air compressor. In this way, the braking power is large. In order to improve the adaptability, it is divided into two gears. In the first gear, only four cylinders produce braking effect, and the second gear and six cylinders all participate in the work to achieve different adaptation. The purpose of weight and slope.


Engine brake system on truck


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Basics Part3 Braking System And ABS

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To truly evaluate the braking performance of a vehicle, you need to design three dimensions of indicators:

1) Braking performance.

That is, braking force and braking distance;

2) Stability of braking performance

Braking heat and water will cause performance degradation, so it is necessary to evaluate the thermal decay resistance and water degradation resistance of the brake;

3) Stability of the vehicles direction during braking

In other words, the brakes must not only stop the car, but also stop the car at the driver's designated place. This does not allow the vehicle to experience side slips (locking the rear wheels), losing steering ability (locking the front wheels), etc. - how many accidents are caused by the loss of control of the vehicle while braking.

braking system on trucks

The role of ABS is not to reduce the braking distance

It is often seen that everyone is discussing whether the braking distance is increased or decreased after installing ABS. In fact, the card friends who discuss this issue may not understand the design purpose of ABS.

Still returning to the question raised at the outset: Evaluating the braking ability of a car is divided into three dimensions. The simplest and most effective way to reduce the braking distance is to increase the braking force of the vehicle - a large brake drum and a wider tire. The emergence of ABS is to solve the third problem: to improve the direction stability of the vehicle when braking - its name translated into Chinese is actually "anti-lock braking system."

Many old drivers know that the car's front wheel lock will cause the vehicle to lose steering ability; if the rear wheel is locked, there will be a tail-flick phenomenon (the high-level brothers will drift according to this principle). The best braking state is to let the wheels "slip on the side". At this time, the braking distance is short and the car will not get out of control. Therefore, before the ABS, the old driver will use the brake method to let the vehicle enter this state.

To sum up, the brakes are lightly pressed, and the brakes are not big enough when the wheels are completely locked. If the brakes are heavy and the wheels are completely locked, the direction is easy to get out of control, so it is necessary to grasp the middle degree. Everyone knows that the reaction speed of the machine must be much faster than people, so use the sensor, small motor to help people operate the brakes, and find the middle one that can take into account the braking distance and the stability of the brake.

ABS system on special truck


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CLVEHICLES.COM Resumed Its First Day of Work Today

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With the COVID-19 epidemic under control, CLVEHICLES.COM resumed its first day of work today. All professional factories are returning to work in an orderly manner. In order to effectively control the growth of the virus, our company has disinfected the factory area. Each customer entering the workshop is strictly disinfected and the temperature is tested.

Fog Cannon Sterilizing Vehicle from CLVEHICLES.COM is Delivered to Saudi Arabia by Air Urgently

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To help fight the COVID-19 epidemic, A Fog cannon sterilizing vehicle from CLVEHICLES.COM is delivered to Saudi Arabia by air urgently. 

Fog Cannon Sterilizing Vehicle

Fog cannon sterilizing vehicle high-pressure principle to spray water in the form of fine water mist. Dust and floating dust in the air are attached to the water mist and fall to the ground after reaching a certain weight. 

Fog Cannon Sterilizing Truck

The environmentally friendly sprayer and spray gun vehicle developed and manufactured by Chengli Special Purpose Vehicle Co., Ltd. can be used for disinfection and epidemic prevention in a large area. 

Sterilizing spary Truck

The sprayed drug stream can effectively cover the areas that need to be disinfected, including garbage dumps, farms, park squares, subways , Highways, ports, docks, construction sites, entry-exit quarantine and other places.

Operation Cautions For Truck Mounted Crane

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1. Know your vehicle very well, you must know his functions and limitations, and some of its special operating characteristics.

2. It should be fully familiar with the contents specified in the operating manual for the truck-mounted crane.

3. Should be fully familiar with the lifting diagram of the truck crane truck. Must understand the meaning of all signs and warnings; be able to calculate or determine the actual lifting capacity of the truck.

4. According to the manufacturer's requirements, regular inspection and maintenance of truck-mounted lifting transport.

5. D a good job transport log with the truck, record in the log: all the inspection, maintenance and maintenance of the truck lifting transport detailed records.

6. Find the load, install the lock, and figure out where the load is placed. Although the operator is not responsible for determining the weight of the load, if he does not verify the weight with the supervisor, he is responsible for the truck-mounted lifting and all its consequences.

7. Consider all factors that may affect the lifting capacity of the truck with lifting and lifting, and adjust the weight of the lifting according to this.

8. Know how to equip the basic procedures of the rigging on the load and ensure that it is implemented in the specific operation.

9. Maintain good communication with the signaller.

10. Smooth and safe operation with truck lifting and transportation.

11. When the vehicle is transported without lifting, it should be stopped and operated correctly.

HOWO crane truck

ISUZU crane truck


We CLVEHICLES.COM have more than 20 years experience in crane truck, can offer 2ton to 20ton crane. To find more about it, please check CLVEHICLES.COM

Safety Operation Guide for High-altitude Operation Truck

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Aerial work trucksare often used in the high-altitude operation range of municipal wires, street lamp maintenance, high-rise exterior wall maintenance, highway billboard maintenance, etc. The chassis of the aerial work vehicle is composed of the chassis of the car plus the lift. Because it requires long-term use and high-altitude operations, the vehicle chassis requires a higher strength in the manufacturing process than the chassis of other ordinary cars. In order to be able to well guarantee the safety factor of personnel who need to work at high altitudes for a long time, their operators need to pass comprehensive safety knowledge training before they can start work. Then there are several safety common senses about aerial work vehicles:

 Aerial working truck

1. When performing high-altitude work on high-rise buildings or high-voltage lines, etc., it is necessary to pay attention to the need to keep a safe distance from the lift. However, if you need to get close to it in some unavoidable circumstances, you should let other staff observe the surrounding situation more, evacuate the crowd, and maintain a normal conversation.

 High-altitude Operation Truck

2. When the operator of the aerial work vehicle is performing high-altitude operations, he must wear the prescribed safety clothing and related machinery to ensure good communication between the upper and lower personnel. Communication equipment and communication gestures are also necessary. In addition, you cannot not wear safety clothing and machinery because of the low operating height. These common sense are the basic safety awareness that must be known when performing high-altitude operations. The staff operating at high altitudes must have good communication skills with the personnel below, be equipped with communication equipment, and be familiar with communication gestures. When working, every misunderstanding of the gestures used in communication will cause inevitable losses.

 Aerial platform truck

3. Check and maintain the hydraulic system, lift, and brake system of the aerial work vehicle on time and regularly. The hydraulic system also includes the hydraulic oil tank and various high-pressure oil pipes. Carefully check whether the hydraulic oil is missing. According to the position of the oil plane of the hydraulic oil tank, check whether the high-pressure oil pipe is aging. The high-pressure oil pipe is often exposed to the outside and is easy to age. Once the oil pipe is aged, the high-pressure oil pipe may burst, causing the lift to drop suddenly, and finally causing danger! Then check whether the connection of each movable joint of the lift is normal. If it is loose, it must be tightened immediately with tools.

Aerial platform truck

The Difference Between Sewage Suction Truck And Fecal Suction Truck

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The tank of the fecal suction truck is oval, usually made of carbon steel or stainless steel. It is mainly used to pump manure, sewage, sludge and liquids mixed with small suspended debris. The truck has two modes: self-flow discharge and pressurized discharge. The tank of the fecal suction truck is fixed on the chassis of the car.

 ISUZU Sewage suction truck


The tank of sewage suction truck is a round tank, and the tank body is also made of carbon steel or stainless steel. It is mainly used for sewers, rainwater wells, inspection wells, septic tanks and various large objects such as mud, silt, gravel, bricks and other materials in the ditch. The sewage suction truck has two modes: self-flow discharge and pressurized discharge. The rear part of the suction truck has a hemispherical cover, which can be opened by the hydraulic system, and can be directly discharged from the rear of the tank.

ISUZU vacuum truck


Due to the structure and shape of the tank, the vacuum and suction of the fecal suction truck are not as large as the sewage suction truck. The suction stroke of the fecal suction truck is ≥7m, and the suction stroke of the sewage suction truck is ≥10m. At the same time, the medium they absorb is different. The fecal suction truck can only extract the liquid with the suspended matter, and the sewage suction truck can basically extract the debris smaller than the diameter. Because the tank body is fixed on the car, only the pressure difference of the vacuum pump can be used to discharge the sewage or the pipe can be self-discharged; and the rear part of the tank of the suction truck can be opened, and the liquid lifting function is used, and the tank body is inclined and straight-lined. better. The sewage suction truck can complete all the work of the fecal suction truck, but some of the fecal suction trucks cannot be completed. In this way, everyone should have seen that the sewage suction truck has higher performance than the fecal suction truck, but its cost is much higher than that of the suction truck. In addition, the suction truck can be installed with sprinkler function according to customer requirements. The water and manure tanks can be divided into separate compartments, which can suck the feces and sprinkle water, and use one vehicle for both purposes. The sewage suction truck can generally be installed with a cleaning function, making it a high-pressure cleaning and suction-utilizing vehicle, commonly known as the “combined dredging vehicle”.

 ISUZU FTR Vacuum suction truck



Three Wheelers High Pressure Water Cleaning Sprinklers

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Small three-wheel sprinklers are also known as spray trucks, multi-function small three-wheel sprinklers, landscaping small three-wheel sprinklers, water tankers, and water trucks. The small three-wheel sprinkler is suitable for all kinds of road surface washing, trees, green belts, lawn greening, construction of roads, factories and mines, and high-altitude building flushing. It has the functions of water transportation, drainage, emergency fire fighting, watering, dusting, high and low level spraying, pesticide spraying and guardrail washing. It is equipped with front, rear and side spray, self-priming special water pump, pump can pump water and drainage, with fire joint, self-flow valve, tank with working platform, green sprinkler can be installed, gun can be rotated to adjust the amount of water ( The spray is column, fog, drizzle). Front punching (spraying), back sprinkling, side spraying (shower), post-working platform, and installation of green sprinklers on the platform (cannon spray shape can be adjusted: straight flush, heavy rain, moderate rain, drizzle, fog, can Continuous adjustment, 360° rotation), equipped with fire-fighting interface, self-flow valve, filter screen, with self-priming and self-discharging function. It is equipped with high-power special sprinkler pumps, power take-offs, ball valves, strainers, water pipes, sprinklers, etc., which are equipped with national quality evaluation*. Pumps, power take-offs, ball valves, and strainers are all national standard products, featuring excellent performance, reliable operation, high efficiency, large flow, and convenient maintenance.

three wheeler sprinklers

The small three-wheel road cleaning car wash tank body is oval or square, made of WISCO high-quality carbon steel plate, 1.5 m in the tank compartment, with anti-wave and anti-sway effect, and can also carry out professional anti-corrosion according to user requirements. Anti-rust treatment, foaming or rock wool can be installed on the outside of the tank to maintain the heat preservation function. Optional charging plate, medicine pump, high-pressure spray equipment, non-vehicle pump power, etc., anti-corrosion and anti-rust in the tank, multi-directional water inlet and outlet joints, pneumatic valves and other advanced facilities to meet the needs of different users.

high pressure water cleaning


Application range

1. The district, square, park, scenic area, small town and other roads are sprinkled with water. In winter, it can dissolve ice on the road surface and dissolve snow.

2. Prevention and control of pests and diseases in municipalities, gardens, green belts, lawns, nurseries, scaffolding crops, greenhouses, and flowering trees.

3. Health, epidemic prevention and disinfection of training venues, camping quarters, and disaster areas.

4. Cleaning and disinfection of stations, hospitals, hotels, swimming pools, waste disposal sites, slaughterhouses, fishery trading sites, grain depots, zoos, etc.

5. Sprinkler maintenance on construction sites, dusting, construction roads, etc.

water flushing tri motorbike



The electric three-wheel road cleaning vehicle is a mobile washing machine specially designed for sanitation, property and cleaning companies. The product adopts high-quality electric tricycle chassis, equipped with professional high-pressure washing machine and water pump, which is convenient and quick to use. Built-in 600 liter special plastic water tank, permanent rust prevention, is the most cost-effective washing car products for urban streets and property communities.

water washing motor tricycle



Electric three-wheel high-pressure cleaning car features: strong applicability, flexible and simple, easy to maintain, low price, etc., can be flexibly traveled between narrow roads. The electric tricycle has a reverse switch, which can easily realize the reverse running function. This is very practical in the narrow alleys and alleys of the road, which is very convenient for parking. It is convenient and quick to add water to the fire hydrant. FB-BJWP01 fog gun three-wheel high-pressure cleaning car is an environmentally friendly, clean, high conversion rate of important dust-reducing equipment, is a epoch-making new generation of sanitation washing products.

road cleaing motor tricycle