All-wheel drive on Renault Duster does not turn on. How four-wheel drive works in a duster

On the market off-road vehicles in particular in Russian Federation, the French car Renault Duster is in a pretty good position. A machine that has four-wheel drive, capable of quite easily overcome impassability. At the same time, the car owner drives calmly, and does not think that at the slightest exit from the road the car will get dirty. How is the four-wheel drive on this model, and what features does it have, and, of course, what is its principle of operation? Let's try to figure this out now.

How four-wheel drive works

The all-wheel drive scheme on the "Frenchman" Renault Duster includes several elements - this is a rear differential, a transmission, an electromagnetic automatic clutch and a transfer case. How do they interact with each other and how to turn on the four-wheel drive?

A plug-in or permanent all-wheel drive is installed on the model indicated by us, how is the all-wheel drive turned on? The answer to such a question will be ambiguous. So, the transfer case is built into the transmission, as it were, and the differential is already controlled automatically through the clutch microcontroller.

In this car, control is carried out using an electronic selector, which is located on the center console. How is all wheel drive enabled? The selector includes only 3 modes - clutch lock, monodrive system and automatic clutch.

When you switch front-wheel drive, the clutch control is disabled. By the way, this is why it decreases several times, because in this case the generator does not need to be supplied with the machine and electronics of the rear gearbox, as well as all its mechanisms.

So, in automatic mode, the automatic clutch is activated independently, the control of which does not depend on the driver, but occurs due to special wheel slip sensors, which are located in the Renault Duster in the ECU. All this means that when the front of your model starts to slip, then instantly the torque begins to be transmitted to rear wheels and turn it off at the right time. This is how the all-wheel drive device looks like.

At the same time, the manufacturer strongly recommends using not the all-wheel drive system all the time, but the automatic mode, in the presence of ice on the road, which will increase your safety several times while driving.

During the mode of blocking the operation of the automatic clutch, its operation is carried out at a constant level. So, all sensors that can somehow affect its operation are instantly turned off, in turn, the cardan shaft will be connected to the gearbox, and will ensure its rotation.

It is believed, according to numerous reviews from car owners Renault Duster, with prolonged use of the blocking mode, the coupling may fail and bend over.

Owner reviews

Many Renault Duster car owners speak differently about the all-wheel drive system, many tell in detail how all-wheel drive works and how to correctly use this feature in their car. Others help with their advice on when and how to turn on the four-wheel drive, and so on. This allows potential buyers to draw their own conclusions about the Duster. And often, positive feedback much more than the negative ones. Let's give you some examples.

Alexey, driving experience 9 years:“I bought my Renault Duster back in 2014, for all the past time, I dashed off 58 thousand kilometers. I often go fishing, hunting, to the country, that is, to places where an ordinary passenger car cannot reach. I can say for sure that the machine copes with its declared functions perfectly well. Of course, not everything works perfectly, but what is there is more than enough. There were no breakdowns, but they say that the blocking function should not work constantly, otherwise a breakdown cannot be avoided.

Pavel, driving experience 4 years:“The all-wheel drive system does not suit me at all. At 60 thousand run, the clutch flew. The car was under warranty, the dealer quickly changed everything, and if not for the warranty, it would have cost me a lot of money. Also, fuel consumption is 3 liters more than a car with front-wheel drive, but with the same power plant. I think it's all about how the clutch works. I read a lot of reviews, I realized that this is normal. I want to sell my car and buy a front-wheel drive option.

Results

Drawing a conclusion from the numerous reviews of the owners of the "Frenchman", the all-wheel drive version provides a large number of features that are not available to the owner of the monodrive version. If you know the modes and principle of operation of the clutch well, then you can easily come to a comfortable driving over rough terrain, and you should not worry about the large and frequent repair of the transmission.

The Renault Duster car is available with two types of transmission. So the car can have a drive only on 2 or on all 4 wheels.
If the machine has a 4-wheel drive, then, relative to the model with a 2-wheel drive, additional transmission units are installed on it, which ensure the transmission of torque to the rear wheels.
In this category of our site, we will consider the main components of the transmission of a Renault Duster car. So, in particular, the car's clutch, gearbox, wheel drives will be considered, and the issue of the general layout of the Renault Duster transmission will also be raised.

The general position of the nodes and their designation of the Renault Duster transmission

1 - engine; 2 - clutch; 3 - gearbox; 4 - transfer case; 5 – front left wheel drive; 6 - front propeller shaft; 7 - rear propeller shaft; 8 - electromagnetic clutch; 9 - rear gear; 10 - rear left wheel drive.

Kinematic diagram of torque transmission in Renault Duster transmission

1 - engine; 2 - clutch; 3 - gearbox; 4 – a drive of the right forward wheel; 5 - transfer case; 6 - cross-axle differential of the front axle; 7 - cardan transmission; 8 - electromagnetic clutch; 9 - drive of the right rear wheel; 10 - cross-axle differential of the rear axle; 11 - rear gear; 12 – left rear wheel drive; 13 - left front wheel drive.

The principle of operation of the Renault Duster transmission

The engine transmits torque through the clutch to the gearbox. In accordance with the selected gear, the torque is transmitted through gear wheels at the checkpoint. Further, the torque is distributed through the differential to the front wheels. The front wheels of the Renault Duster are not disabled, that is, they are leading in any case. Also, depending on the selected mode, which is switched from the passenger compartment, the automatic mode "AUTO" can be selected. In this case, when the front wheels slip, the electromechanical clutch will automatically turn on, thereby additionally transferring torque to the rear wheels. In LOCK mode, a forced constant transmission of torque to two axle shafts is activated.

It is advisable to use the all-wheel drive mode only for off-road, difficult sections of the road. The use of blocking on pavement, especially on high speeds undesirable, as it leads not only to increased consumption of gasoline, but also to the rapid wear of the transmission. That is why, at a speed of more than 80 km / h, the full lock mode automatically switches to the "AUTO" mode.

Checkpoint Renault Duster (description and design)

On Renault Duster cars, 5 and 6 speed gearboxes are installed, depending on the power plant. So for a 1.6 liter engine, a 5 st gearbox is used, for a 2.0 liter engine, a 6 st gearbox. The gearbox is structurally made with two shafts, on which gears with oblique teeth for forward speeds and with straight teeth for reverse speed are installed. The gearbox housing is made of two components: the gearbox housing and the gearbox clutch housing. The body parts are cast from aluminum alloy and are interconnected with fasteners.

The clutch of a Renault Duster car is a single-disk, dry clutch. This type of clutch is used for most vehicles in use today.
In fact, between two discs, one of which is the engine flywheel, and the second disc, the clutch baskets constantly clamp the clutch disc. It is through the flywheel that the torque from the engine is transmitted, and then, if the disk is clamped, then it is transmitted to the shaft with gearbox splines, and as a result, through the gearbox to the wheels of the car. If, however, the clutch basket disc is pressed, then torque will no longer be transmitted to the clutch disc. This feature of the clutch is used to shift, engage gears at the gearbox.

In case of incomplete disengagement of the clutch, when the pedal is pressed, as well as after repair work related to the hydraulic clutch system, it is necessary to bleed the Renault Duster clutch hydraulic drive. In this article, we will describe this procedure.

The clutch basket and disc are removed if they are replaced, if the flywheel on the engine or the oil seal on the engine shaft are replaced.
The work is best done on a manhole or on a lift. Also, before removing the basket and clutch disc, the gearbox is removed from the car. More details about the procedures for removing the gearbox from the car will be described in our other article "Reno Duster gearbox (removal and installation)". Here we will only talk about the features of fastening and installing the basket and clutch disc.

The clutch master cylinder is installed on the Renault Duster panel between the passenger compartment and the engine compartment. The master cylinder is removed in case of its replacement, or for body work. The main cylinder is installed in the shield without fastening by means of bolts and nuts. In this article, we will walk you through the procedure for removing the clutch master cylinder from a car.

The shift cables are removed if they are excessively stretched or broken, when it is impossible to ensure a clear engagement and selection of gears for the gearbox by adjustment. It is better to replace the gearbox cables on a flyover, and also to involve an assistant for these operations.

Renault Duster front wheel drives (description)

Renault Duster front wheel drives are a "classic" layout and design that is used on most front-wheel drive vehicles. So the drives are CV joints, between which the shafts are installed. Left and right side actuators are not interchangeable.

The front wheel drives are removed if they are replaced. Also, the drives can be removed to replace the oil seals in the gearbox. The most likely signs of a malfunction of the wheel drives are manifested in the wear of the rotary mechanisms, which, in the extreme positions of the steering wheel, when the machine is moving, begin to make noises and knocks.
In this article, we will only consider operations for replacing drives for Renault Duster with 4-wheel drive. Removing the front wheel drives for front-wheel drive (4 * 2) cars will be discussed in another article.
You can learn more about Renault Duster wheel drives from the article "

Renault Duster 4x4 immediately after the introduction on the market aroused great interest in Russian market. Enough interesting characteristics the crossover was immediately appreciated by thousands of Russians. Today we will analyze in detail the Renault Duster all-wheel drive device and the transmission modes.

The principle of operation of the Renault Duster 4x4 is not new, something similar is used on other small crossovers. For example, the Nissan Qashqai and Dzhuka all-wheel drive transmission works in exactly the same way. In the photo at the beginning of the article, the operation of the all-wheel drive Renault Duster.

The Duster 4x4 gearbox is made in a single housing with an additional transfer gearbox. When the front wheels rotate, the shank of the distributing unit, to which the cardan shaft is attached, constantly rotates. And already the cardan shaft transfers torque to the rear gearbox. But there is an electromagnetic clutch in front of the rear gearbox, the task of which is either to transmit torque further, or to let the cardan rotate idly. It is this clutch that is the main element of the plug-in rear-wheel drive, without which there would be no 4x4 transmission on the Duster at all. How does this transmission element look from behind, under the bottom of the crossover? See photo below.

The operation of the entire all-wheel drive can be done from the interior of the crossover with the help of a small washer, which just blocks or unlocks the electromagnetic clutch. Thus, turning a single-wheel drive compact crossover into an all-wheel drive SUV. There are three modes of operation in total.

First 2WD operation mode- the front wheels and cardan rotate, but the electromagnetic clutch does not transmit torque to the rear gearbox.

All-wheel drive mode “Lock”- the electromagnetic clutch is blocked and the torque goes to the rear gearbox, then to the rear wheels.

Automatic mode "Auto"– In this mode, when the front wheels slip, for example on ice or other slippery surfaces, the electromagnetic clutch turns on itself and makes the rear wheels also rotate.

It is worth noting that you cannot constantly drive in the “Lock” mode, as this will lead to overheating of the electromagnetic clutch and its breakdown. Naturally, in the all-wheel drive mode, the fuel consumption of the Duster 4x4 increases, especially off-road.

How the Renault Duster drive works, what modes of operation does the all-wheel drive transmission of this crossover have? Let's try to answer all these questions now.

Renault Duster drive scheme pretty unpretentious. The torque is transmitted to the gearbox, and from there it is distributed between the front wheels by means of shafts, at the ends of which there are hinges of equal angular speeds. More precisely, on the outer ones there are ordinary CV joints, and on the inner “grenades” the design is slightly different, there are tripods inside. This allows the axles to move with some clearance. If front-wheel drive Renault Duster is clear, its operation scheme differs little from the principles of operation of any front-wheel drive car with a transverse engine. Simplicity of design is a big plus for such a budget car.

And here four-wheel drive for Renault Duster 4x4 a little more complicated. The gearbox contains a compact transfer case (indicated by an arrow in the photo), from where the torque is constantly transmitted to the rear gearbox via the cardan shaft. But in front of the gearbox there is an electromagnetic clutch (the location of the clutch is also indicated by an arrow), which transmits torque further, or does not transmit it, that is, the cardan shaft simply rotates at idle. And already from the gearbox along the same axles with CV joints at the ends, the torque is transmitted to the rear wheels. We look at the photo of the rear of the Renault Duster 4x4 transmission.

Such Renault Duster transmission design allows you to operate the drive easily and naturally. To control the operating modes of the drive in the cabin of the crossover there is a switch washer, here it is in the photo. With one easy movement, you can turn a front-wheel drive crossover into an all-wheel drive SUV or entrust everything to automation.

• In the “Lock” mode, the electromagnetic clutch is activated and the torque goes through the gearbox to the rear wheels.
• In the “2WD” mode, the front wheels of the Duster become driving, the propeller shaft, which should transmit torque to the rear gearbox, rotates at idle.
• In “Auto” mode, the crossover itself determines when it should connect rear-wheel drive. Typically, the electromagnetic clutch is activated when the front drive wheels slip.

It is worth noting that the most dynamic and at the same time economical is “2WD”, with partial or full use of all 4 wheels, fuel consumption increases. And in the mode of complete blocking of the “Lock” electromagnetic clutch, the speed of the crossover should not exceed 80 km / h. Off-road 4x4 operation can overheat the clutch, resulting in transmission failure. This is how Renault Duster all-wheel drive works.

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How does Renault Duster all-wheel drive work?

general information

In general, the drive system of this car model is quite simple and it is not difficult to understand even for a non-professional. The distribution of torque between the wheels is carried out from the gearbox. CV joints are installed at the outer ends of the shafts, which receive equal angular velocity, and tripods are located at the inner ends. Such a mechanism of operation is nothing new in terms of development, the scheme is borrowed from the famous Nissan Quashkai.

Operating modes

The most basic mode is called 2WD, which includes the operation of only the front wheels and is recommended for driving on quality and dry road surfaces. This mode provides economical driving in terms of fuel consumption and a comfortable speed of movement.

The automatic mode of operation determines the best grip on the canvas. It is mainly used on highways and city roads. Under adverse weather conditions, such as during rain, the clutch independently determines at what point it is necessary to connect the rear wheel drive.

In a mode called LOCK, the clutch is locked and torque is applied to the rear wheels, so the car becomes fully driven and ready to overcome off-road. But such a function is recommended for operation at reduced speeds of up to 80 kilometers per hour.

Outcome

The owners of a Renault Duster car must independently choose the optimal drive mode depending on the situation and remember that the most economical driving is obtained in 2WD mode, and it is advisable not to be in LOCK mode too much. for a long time so as not to overheat the clutch, which can lead to a breakdown of the mechanism, especially since repairs at the current price of Renault Duster 2014 can be very expensive!