Mitsubishi 4j11 engine

New 4j11

In 2011, Mitsubishi Motors announced the creation of new high-tech engines. One of them 4j11 included a new version of the electrical control of the GDS phases and a unique version of the automatically controlled mechanism for turning on and off the internal combustion engine.

Technical specifications

The engine capacity of the new power plant is 2 liters, the power is 150 hp. This engine is installed on Mitsubishi Delica and Outlander. The engine is powered by regular gasoline AI-92 and AI-95. Consumption is about 6-7 liters per 100 kilometers.

The number of cylinders in the new engine is 4, type SOHC. The injection system is distributed. Emission of harmful substances is 145-179 grams per kilometer. More detailed information can be found in the table.

Engine displacement, cc	1998
Maximum power, hp	150
Maximum torque, N * m (kg * m) at rpm.	190 (19) to 4200
191 (19) to 4200
Fuel used	Petrol Regular (AI-92, AI-95)
Fuel consumption, l / 100 km	6.7 – 7.7
engine's type	4-cylinder, SOHC
Add. engine information	Distributed injection ECI-MULTI
CO2 emission in g / km	145 – 179
Cylinder diameter, mm	86
Number of valves per cylinder	4
Maximum power, h.p. (kW) at rpm	150 (110) to 6000
The mechanism for changing the volume of cylinders	no
Start-stop system	Yes
Compression ratio	10.5
The piston stroke, mm	86

New GRS phase change system

Many experts compare the 4j11 engine with the 4b11. In fact, 4j11 and 4b11 have differences in the number of camshafts - there is one shaft per 4j11. In addition, the new motor has a system for dynamically changing the phases of the GDS.

The MIVEC system works according to the following principle:

• it regulates the lift of the inlet fitting, as well as the opening time and torque;
• ensures stable combustion of the fuel liquid;
• allows to reduce the friction of the piston against the cylinder walls, thereby providing significant fuel savings without loss of power and KM.

Mayvek system

For the first time, the system was installed with the aim of increasing the efficiency of the power plant at any speed by just one car. Subsequently, the system was put on the conveyor, it was equipped with various car models.

The use of MIVEC made it possible to increase the power of the power unit by 30 hp. This is the world's first technology introduced for light segment motors without phase rotation.

Myvek successfully controls the functioning of the engine valves in several modes, depending on the engine speed and switching phases. The standard version implies the use of two modes, but on the new motors 4j10 and 4j11 a permanent change is provided.

The principle of operation of the system is as follows:

• due to the difference in valve lift, the combustion of the fuel liquid is stabilized, which makes it possible to reduce consumption and increase KM;
• by extending the moment of opening the valves and changing the lift, the values ​​\uXNUMXb\uXNUMXbof the volume of intake and exhaust of fuel increase (the effect of "breathing deeply").

MODES	EFFECT	RESULT
Low revs	Increasing combustion stability by reducing internal EGR	Increased power, fuel economy, improved environmental performance during cold start
Improving combustion stability through accelerated injection	Savings and improved CO2 performance
Friction minimization through low valve lift	Reducing fuel consumption
Increase volume return by improving mix atomization	Increasing dynamic performance
High revs	Increasing returns on volume through the effect of dynamic rarefaction	Power boost
Increase volume return with high valve lift	Power boost

4j11 on Outlanders

Engine 4j11 with a single camshaft, which makes the design of Myvek more complex than for DOHC (2 camshaft) engines. The difficulty is that SOHC engines must have arched intermediate shafts (rocker arms) for valve control.

As for the design of the valves themselves, the differences depend on the cylinders.

1. Low lift (low profile cam) with redesigned rocker arm.
2. Medium lift (medium profile cam).
3. High-lift (high profile cam).
4. T-arm, which is integral with the height-lift.

Note that when the engine reaches maximum speed, the internal elements of the power plant are shifted by oil pressure. The T-arm presses on both rockers, and the High-lift controls all the valves and rockers in this way.

Myvek technology was originally conceived as an option for increasing the specific power of internal combustion engines. Indeed, the exhaust resistance decreased, the mixture supply accelerated, the working volume increased, the valve lift was controlled. As a result, the increase in power reached almost 13%.

Then it turns out that Myvek technology also makes it possible to save fuel and improve emission parameters. And with all this, the engine does not lose stability in operation, which is very, very good.

Thus, Mivek technology is three in one:

• reduced fuel consumption;
• quick start;
• reduction of losses at low speeds.

The first effect (reducing fuel consumption) can be achieved through an exhaust gas reuse system. A quick start of the power plant is ensured by late ignition and the provision of a lean fuel assembly. Loss reduction is the result of the use of a dual exhaust manifold using a front catalytic converter.

Reviews of the new 4j11 engine will help to study in more detail the capabilities of the power plant, weaknesses, etc.

Delikovod	4j11 fresh: more economical, greener, but… there is a lot of money to pay a fee for “less than 3 years”?! ..
Crimes	All the same, let's not forget that the Japanese comrades, when developing cars for the domestic market, do not even bother about the fact that their products will someday be used in, in particular, in Russia, this also applies to the new engine, reinforced suspension, and increased ground clearance , and the front axles, except for Jimny, were removed along with the arches… .
SHDN	Good day to everyone! I’m not a local here ... the question is this: I really want to buy d5. I did a poll on the local website of Blagoveshchensk and they said to take NOAH or VOXI better! I’m guessing ... I often go out of town for fishing and nature ... well, here ... what problems can arise during operation for 3-4 years of Delica D: 5 ??? And also, are the engines on D: 5 all simple or there is GDI !!! Well, more questions may arise along the way)))
Alyosh	GDI is an abbreviation from the 90s of the last century, well, by inertia, for the first few years in the 21st century, cars with such motors were produced. Yes, and their problem is greatly exaggerated.
Alex 75	4j11 chain engine, simple, omnivorous
Kolya Fat	The modern Delica with 4j11 honestly continues the best traditions laid down in the concept and ideology of the car many years ago to the delight of us, the owners of this glorious device.
Baloo	The campaign added a mechanism for rotating and lifting valves because it is present: VALVE LIFT CONTROL MOTOR THROTTLE VALVE CONTROL SERVO
Sasha Bely	Are 4G11 and 4G11B the same engine? It seems that both are 1244 cc, but about B it is written that he is supposedly 72 hp, and I have 50 in the data sheet ... (tax, do not read !!! Then, I wrote already once, the problem was with black smoke from the muffler, and it seems she decided - there was a terrible overflow and the CO was under 13, the carb was cleaned - everything was fine ... But it wasn’t there! It seemed like the symptoms were removed, but the disease remained. Last season - I ran no more than 3000 km - I changed the candles 3 or 4 times, they burn all the time, and all the black ones are grimy! Then I put the Zhiguli ones, but it seemed that the glow number was the same. Then, a strong oil consumption appeared, the punishment cell was pulled up, but the consumption remained the same. Apparently, the oil gets into the cylinders, it seems that the smoke has turned black again, so soon there will be an overflow again ...
Eugene Peter	During repairs, more shoals may be found - a pump, an oil pump, etc. abominations. Which can and do work, but not even an hour will be covered. While dismantled - it is necessary to look at everything. Show the head of the block to someone too - check out the valve guides, grind the valves yourself, change ...