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4G13 engine is okx.com logina four-cylinder engine launched by Mitsubishi in 1980. It adopts a SOHC structure, with 2 valves in each cylinder and a displacement of 1.3L. It is mainly applicable to the Mitsubishi Mirage/Dodge Colt series, and is also widely used in other models. The following will explain this engine in detail from technical parameters, structural characteristics, advantages and disadvantages and other aspects. Technical parameters The technical parameters of the 4G13 engine are as follows: engine type: four-stroke, four-cylinder, single overhead camshaft (SOHC) number of valves: 8 displacement: 1.3L (1298cc) cylinder diameter: 71mm x 82mm compression ratio: 9.2:1 maximum power: 75 horsepower /6000 rpm maximum torque: 104 Nm/4000 rpm Structural features 1.Positive fire ignition system 4G13 engine adopts a positive fire ignition system, and each cylinder has an ignition strip. The system is ignited at the right time, which can improve the combustion efficiency, make the engine more powerful and the fuel consumption lower. Two. Fixed camshaft 4G13 engine camshaft is located above the cylinder head, which drives the opening and closing of the valve through gear transmission. The camshaft is fixed and cannot be adjusted, so it needs regular maintenance to ensure its normal operation. 3. In order to reduce the weight of the engine and reduce the fuel consumption of the vehicle, the 4G13 engine adopts an aluminum alloy cylinder block. This material not only has the characteristics of lightness and good thermal diffusion, but also has a long service life and will not rust and corrosion. Four. The engine column installation is considered from the perspective of the aesthetics of the vehicle. The 4G13 engine adopts a column installation structure. That is, the engine and the transmission are inserted vertically side by side in the front of the car body, instead of the traditional horizontal installation structure.This installation method can not only reduce the length of the body, but also better disperse the vibration between the engine and the cab to improve the comfort of the vehicle. Advantages and disadvantages: 1. Low fuel consumption: The 4G13 engine adopts a single overhead camshaft (SOHC) structure, and the opening time and degree of the valve are limited. This structure controls the injection time and amount of fuel, so that the fuel utilization rate is higher and the fuel consumption is lower. Two. Lightweight: Due to the use of aluminum alloy cylinder block, the weight of the whole engine is lighter than that of the traditional ferroalloy cylinder block engine, with faster acceleration and lighter load, making the vehicle more fuel-efficient. 3. Convenient maintenance: Due to the simple structure and the small number of parts, it is easier to maintain. In addition, due to the long production time of the 4G13 engine and the sufficient supply of parts, it is very convenient to repair and replace parts.Disadvantages: 1. Insufficient power output: Due to the small displacement of the engine, the maximum power and torque are low, and the acceleration and overtaking ability are relatively poor. Two. Loud noise: Due to the adoption of a single overhead camshaft structure, the linear shape of the valve and the strength of the spring are not as accurate as the double overhead camshaft structure, resulting in a large combustion noise and roof noise of the engine. 3. Narrow range of applications: 4G13 engines are mainly used in some small cars and commercial vehicles, such as Mitsubishi Mirage and Dodge Colt. Therefore, this engine may not be the best choice for heavy vehicles such as large buses and trucks. In summary, the 4G13 engine, as a classic four-cylinder engine, has been widely used and recognized all over the world. Although it is inThere are some shortcomings in terms of power, but its advantages such as easy maintenance, low fuel consumption and light weight make it an ideal choice for many small family cars.

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