1.5 dci engine - which unit is used in Renault, Dacia, Nissan, Suzuki and Mercedes cars?

At the very beginning, it is worth noting that there are many options for this unit. The 1.5 dci engine is available in more than 20 modifications. There are already 3 generations of motors in cars, which have different power. In this article you will find the most important information!

1.5 dci engine and its debut. What was the first group characterized by?

The first device to debut on the market was the K9K. She appeared in 2001. It was a four-cylinder turbo engine. It was also equipped with a common rail system and was offered in different power ratings from 64 to 110 hp. 

Differences between individual drive versions include: different injectors, turbochargers or flywheels or others. The 1.5 dci engine is distinguished by a high work culture, decent performance in more powerful variants and economy - fuel consumption averages 6 liters per 100 km. 

Different varieties of 1.5 dci - the specifics of individual types of motor

It is worth learning more about the specifics of the individual 1.5 dci engine options. The weakest of them, producing 65 hp, are not equipped with a floating flywheel. They also do not have a variable geometry turbine and intercooler. In the case of this engine, the injection system was created in collaboration with the American company Delphi Technologies. Works at a pressure of 1400 bar. 

82 hp version differs in that it is equipped with an intercooler and a higher turbo pressure from 1,0 to 1,2 bar. 

100 hp version It has a floating flywheel and a variable geometry turbine. The injection pressure is also higher - from 1400 to 1600 bar, like the turbo boost pressure, at 1,25 bar. In the case of this unit, the design of the crankshaft and head has also been changed. 

New generation of the unit since 2010

With the onset of 2010, a new generation of the unit was introduced. The 1.5 dci engine has been upgraded - this includes the EGR valve, turbocharger, oil pump. The designers also decided to use a Siemens fuel injection system. A Start-Stop system is also implemented, which automatically turns off and starts the combustion unit - in order to reduce engine idling time and reduce fuel consumption, as well as the level of toxicity of exhaust gases.

What is a 1,5 dci engine valued for?

The biggest advantages of the department are, first of all, cost-effectiveness and high work culture. For example, a diesel engine in a car like Renault Megane consumes 4 liters per 100 km, and in the city - 5,5 liters per 100 km. It is also used in vehicles such as:

• Renault Clio, Kangoo, Fluence, Laguna, Megane, Scenic, Thalia and Twingo;
• Dacia Duster, Lodgy, Logan and Sandero;
• Nissan Almera, Micra K12, Tiida;
• Suzuki Jimny;
• Mercedes class A.

Moreover, with such good combustion, the engine has a fairly simple design, resulting in low operating costs. The 1.5 dci engine is also durable. However, it should be borne in mind that the failure rate of a node can increase dramatically after exceeding a mileage of 200 thousand km. km.

Failure rate 1.5 dci. What are the most common faults?

Poor quality fuel is considered one of the most common causes of unit failure. This is due to the fact that the engine does not tolerate low-quality fuel. This can be especially true for bikes made with Delphi components. The injector in such conditions can only be serviceable after 10000 km. 

Drivers who use cars with more powerful units also complain about problems. Then there are malfunctions associated with a damaged EGR valve, as well as a floating flywheel. Expensive repairs are also associated with a damaged particulate filter, which, however, is a problem for most modern diesel engines. 

Sometimes there may also be a failure related to the drive electronics. The most common cause is corrosion occurring in the electrical installation. Sometimes this is the result of damage to pressure or crankshaft position sensors. Taking into account all the presented circumstances of the occurrence of a malfunction, it is worth emphasizing the role of the correct use of the car, as well as the maintenance of the power unit.

How to care for a 1.5 dci unit?

A thorough inspection is recommended between 140 and 000 km. As a result of such operation, problems with the electronic system or the injection system may occur. 

It is also worth replacing the injection system regularly. Created by Delphi, it should be replaced after 100 km. Siemens, on the other hand, is more reliable and can last longer, but replacing an old system with a new one will be more of a financial challenge.

For trouble-free operation of the unit for a long time, it is also necessary to change the oil regularly. It should be refueled every 10000 km. This will help avoid problems associated with damage to the crankshaft. The cause of this malfunction is a decrease in the lubrication of the oil pump.

Is a Renault 1.5 dci engine a good engine?

Opinions about this unit are divided. However, one might venture to say that the number of people complaining about 1.5 dci would decrease if all drivers serviced their engines regularly and used good quality fuel. At the same time, the French diesel engine could pay off with stable operation and high efficiency.