Nissan Almera engine volume of 1.6 liters. This is a gasoline 16 valve engine with a cast iron cylinder block and a timing belt. The power unit is installed on Renault Logan, Lada Largus and assembled in Togliatti, in the same place where they make Nissan almera for the Russian car market. The Renault K4M engine has a rather long service life, however, a timing belt breakage leads to serious problems. First is bent valves and damage to valve seats and piston crowns. But more about everything later in our article.

Engine device Nissan Almera 1.6

The Nissan Almera engine is a 4-cylinder 16-valve unit with multipoint fuel injection and a timing belt. At the heart of the cast iron block. The cylinders are bored directly into the block. The order of operation of the cylinders: 1-3-4-2, counting from the flywheel. The cylinder head is made of aluminum alloy. The engine has hydraulic lifters, so it does not need manual valve clearance adjustment.

Almera 1.6 camshafts are driven by a toothed belt from a pulley crankshaft... A thrust flange is made on the shaft next to the first (counting from the camshaft pulley) support neck, which, when assembled, enters the grooves of the block head and cover, thereby preventing axial movement of the shaft. The camshaft pulley is not fixed on the shaft with a key or pin, but only due to the friction forces that arise on the end surfaces of the pulley and shaft when tightening the pulley nut.

With proper operation nissan engine Almera can easily retreat 400,000 kilometers. On Almera, the motor can be combined with a 5-speed manual transmission, or with a 4-band automatic. The transmission is used from the same Renault Logan.

Engine characteristics Nissan Almera 1.6

• Working volume - 1598 cm3
• Number of cylinders - 4
• Number of valves - 16
• Cylinder diameter - 79.5 mm
• Piston stroke - 80.5 mm
• Timing drive - belt
• Power hp (kW) - 102 (75) at 5750 rpm. in min.
• The torque is 145 Nm at 3750 rpm. in min.
• Maximum speed - 185 km / h
• Acceleration to the first hundred - 10.9 seconds
• Fuel type - gasoline AI-92
• Fuel consumption in the city - 9.5 liters
• Combined fuel consumption - 7.2 liters
• Fuel consumption on the highway - 5.8 liters

Timing drive of the Nissan Almera engine 16 valves

Focus on operation this motor it is necessary to pay precisely to the timing drive. Belt replacement should be carried out strictly according to the manufacturer's regulations. That is, once every 60 thousand kilometers or after 4 years of operation, if the mileage is not reached. Belt breakage, overshoot, cut teeth lead to bending of the valves. And this is a rather expensive malfunction. Since you have to go through the cooking of the cylinder block.

Another feature of the Nissan Almera engine can be considered the absence of alignment marks on the camshaft pulleys. Moreover, they do not have any keys and are not fixed in one position. When replacing a belt, it is necessary to fix the crankshaft and camshaft with special devices; without this, replacing the belt will be a very difficult task. To fix the crankshaft, you will have to release a special technological hole in the cylinder block and screw the retainer bolt into it. To fix the camshafts, you will have to insert a special plate into the slots of the camshafts (with back side, relative to the camshaft pulleys). In general, if you are not ready for this, it is better to change the timing belt in the service.

Three well-known firms took part in the creation of the Nissan Almera G15 car at once - Nissan, Renault and AvtoVAZ. Manufacturers expected the brand to be the largest japanese company will attract the attention of buyers, and such a budget foreign car will be willingly purchased. This marketing move did its job, there were a lot of hunters for an inexpensive car - fortunately, the quality of Russian assembly and components was raised to a decent level.

Power unit

The Almera engine is nothing more than the Renault K4M engine, developed by French engineers back in 1999 and is the only option power plant for this vehicle. Powered by AI-92 gasoline, four-stroke, has two camshafts and sixteen valves. Four cylinders of the engine are located in one row and develop 102 hp. from.

K4M motor with gearbox and clutch make up a single power unit with fastening at three points engine compartment on metal rubber supports. The cylinder group is located in a cast-iron block; the top of the block, made of aluminum alloys, is fastened on top of ten bolts.

In the cylinder head (cylinder head), there are four valves for each cylinder - two for the outlet and two for the inlet with hydraulic lifters that automatically adjust the clearances between the valve and the camshaft. Two camshafts are located at the top of the head, one of them works with exhaust valves - another with inlet. This gas distribution mechanism represents the classic DONS system.

The timing system has a belt drive and is the weakest link, because oil or the slightest stratification on the belt leads to the belt breaking and the inevitable meeting of the pistons with the valves and further expensive repairs.

In order to prevent this, it is necessary to change the belt drive strictly within the time specified by the operating instructions or in case of oiling of the belt and damage to the fabric base.

The Nissan Almera G15 engine has injection system power supply, which is based on electronics that directly control the injection and distribution of fuel to the injectors.

Unpretentious and reliable motor K4M is designed for a mileage of 400 thousand km, but in practice, the engine resource is much longer.

Transmission Nissan Almera G15

AT russian assembly Almera's engine is equipped with a manual 5-speed gearbox or a four-speed automatic. The manual transmission is far from a new development for Renault cars, but with rather frisky dynamics, it accelerates to one hundred kilometers in 10.9 seconds, which is not bad at all for a car weighing 1.2 tons.

A reliable and well-assembled manual transmission rarely breaks down and a mileage of 200 thousand km is not a problem for it. Despite the manufacturer's statement that it is unnecessary to change the oil for the entire service life, for russian roads it is recommended to change the oil after 75 thousand km.

The automatic transmission on the Nissan Almera is the same for Renault Clio, it, like all machines, does not keep up with the gas pedal, the reaction is with an obvious slowdown, acceleration to a speed of 100 km / h occurs in 12.7 seconds. Automatic box does not tolerate overheating and often fails because of this, but its repair is simple.

Fuel consumption with an automatic machine, especially with the air conditioner on, is about 13 liters in the urban cycle, but this is understandable - you have to pay for comfort.

Modification of the K4M engine

The Nissan Almera motor is a solid and reliable unit, but it has one weakness, at low initial speeds it lacks power. It burns a lot of fuel when working at low levels. The technology of Gadgetman Technologies comes to the rescue and the essence of the work performed is as follows: near throttle the engine chooses metal and cut special grooves of a special shape, which increase turbulence and change the physical nature of the air flow.

On an unfinished throttle, fuel particles do not burn, but simply fly away into exhaust system... The applied technological grooves on the throttle create such pressure drops that the fuel mixture turns into a vapor state and completely burns out. Accordingly, the thrust at low revs increases, and the complete combustion of the mixture guarantees a decrease in fuel consumption.

The budget sedan Nissan Almera in the G15 body is designed specifically for russian market and is produced at the facilities of AvtoVAZ. The model is based on the B0 platform, on which most inexpensive cars concern Renault-Nissan, for example, the same. Suspension Nissan Almera is composed of a front independent structure of the MacPherson type and a rear semi-independent torsion beam. The chassis was adjusted taking into account the specifics of our roads, so it turned out to be almost "omnivorous". The adaptation meant, among other things, a decent ground clearance, which amounted to 160 mm.

The car has only one powertrain option - the well-known K4M engine, dating back to 1999. The 1.6-liter gasoline 16-valve "four" does not have outstanding technical characteristics. She is capable of developing 102 hp. power and 145 Nm of torque. In tandem with the motor, a 5-speed mechanical box or 4-speed "automatic". The sedan, equipped with a manual transmission, is more agile, "bringing" its "brother" with an automatic transmission almost 2 seconds when accelerating to 100 km / h.

The fuel consumption of the Nissan Almera also depends on the type of gearbox installed. Modification with "mechanics" consumes on average about 7.2 liters, with "automatic" - about 8.5 liters.

One of the main advantages of the Nissan four-door is the spacious interior, which turned out to be such thanks to the successful layout and impressive dimensions, which allow the model to be attributed to the C-class or, with a certain stretch, even to the D-class. The sedan also boasts a solid trunk, ready to take up to 500 liters of cargo.

Full specifications Nissan Almera G15 - summary table:

How did you come up with this?

The technology was not invented by me. I'm just a copyright holder. And I bring the technology to mind.

How long have you been doing this?

Tenth year professionally improve the performance of cars with mechanical revision throttle. I don't deceive anyone and I don't run from anyone. Cheating people is not my specialty, and cheating is more expensive for me. I give a guarantee for my work. The described changes in the cars were recorded according to the words of the customers.

On which cars is the throttle refined?

The choke is modified for gasoline (injection, carburetor) engines. On diesel engines we use other technologies.

How much will the engine power increase after the throttle is refined?

The engine delivers maximum power to high revs 4000-7000 rpm depending on the engine. It is this indicator that is spelled out in your documents. At low and medium revs, the engine does not deliver maximum power. I use this technology to increase power at low revs and partly at medium revs. And this indicator does not affect the maximum engine power in any way. Therefore, the horses remain, and the traction at low rpm increases.

How can throttle tuning affect engine life?

Positively! The less fuel is burned, the less carbon deposits and coking of pistons and piston rings are formed. The absence of carbon deposits does not entail other resulting problems with the engine. And also the resource of the auto catalyst is extended, if it is still available. Because unburned gasoline will not burn out in the catalyst. Once the throttle is refined, you start driving at lower rpm. Less RPM reduces wear on rubbing engine parts. Thus, the service life of the engine increases.

Why don't the manufacturers immediately make the choke revision?

Why don't manufacturers immediately do what the market offers to improve cars ?!

First, the technology is young. Secondly, the manufacturer puts in the car what the market offers. Bosch takes the lion's share of the electrical market. Therefore, this revision must be done by Bosch. Thirdly, there is information that Toyota and BMW bought this technology. It is possible that new car models of these manufacturers will already have this revision.