CN111022195A - Cylinder deactivation method for oil saving of in-line 5-cylinder internal combustion engine - Google Patents
Cylinder deactivation method for oil saving of in-line 5-cylinder internal combustion engine Download PDFInfo
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- CN111022195A CN111022195A CN201911285710.2A CN201911285710A CN111022195A CN 111022195 A CN111022195 A CN 111022195A CN 201911285710 A CN201911285710 A CN 201911285710A CN 111022195 A CN111022195 A CN 111022195A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/06—Cutting-out cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
- F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention provides a fuel-saving cylinder deactivation method for an in-line 5-cylinder internal combustion engine, which comprises the steps of closing cylinder deactivation for a 2 nd cylinder and a 5 th cylinder if the in-line 5-cylinder internal combustion engine has the ignition sequence of the 1 st cylinder, the 2 nd cylinder, the 4 th cylinder, the 5 th cylinder and the 3 rd cylinder, wherein the 1 st cylinder is adjacent to a fan, and the 5 th cylinder is adjacent to a flywheel; if the ignition sequence is the in-line 5-cylinder internal combustion engine with the 1 st cylinder, the 5 th cylinder, the 2 nd cylinder, the 4 th cylinder and the 3 rd cylinder, the 1 st cylinder is adjacent to the fan, and the 5 th cylinder is adjacent to the flywheel, the cylinder deactivation is closed for the 3 rd cylinder and the 5 th cylinder. The cylinder stopping method for saving oil of the in-line 5-cylinder internal combustion engine has obvious oil saving effect, has excellent performance in three aspects of vibration, output torque fluctuation and temperature difference among cylinders, can reduce the vibration and the output torque fluctuation and avoid the problem of cylinder eccentric wear caused by the temperature difference among the cylinders.
Description
Technical Field
The invention belongs to the field of fuel saving of internal combustion engines, and particularly relates to a fuel saving cylinder deactivation method for an in-line 5-cylinder internal combustion engine.
Background
The cylinder stopping technology is an oil saving technology of the traditional internal combustion engine, is applied to 3-cylinder engines, 4-cylinder engines, 6-cylinder engines and engines with more cylinders for vehicles, and achieves an obvious oil saving effect.
When the in-line internal combustion engine for the vehicle is used for cylinder deactivation, the in-line internal combustion engine has special vibration characteristics, output torque fluctuation characteristics and temperature difference characteristics among cylinders. Vibration and output torque fluctuations can impair the NVH experience for vehicle occupants; the temperature difference between cylinders has the risk of eccentric wear of the cylinders after long-term use; for example, after the in-line 6-cylinder engine stops 3 cylinders, if the 1 st cylinder, the 2 nd cylinder and the 3 rd cylinder are kept activated and the subsequent cylinders are stopped, on one hand, vibration and output torque fluctuation are deteriorated to the level of the common three-cylinder engine, and on the other hand, the 3 cylinders at the flywheel end of the engine have low temperature, especially at the 5 th cylinder and the 6 th cylinder. Whereas in-line 4-cylinder engines, after deactivation of the 2 nd and 3 rd cylinders, the angular separation between the combustion strokes of the cylinders is as high as 180 degrees, vibration and output torque fluctuations have the problem of significant degradation.
Disclosure of Invention
In view of the above, the present invention aims to provide a cylinder deactivation method for oil saving of an in-line 5-cylinder internal combustion engine, which has an obvious oil saving effect, has excellent performance in three aspects of vibration, output torque fluctuation and temperature difference among cylinders, can reduce vibration and output torque fluctuation, and avoids the problem of cylinder eccentric wear caused by the temperature difference among the cylinders.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a cylinder deactivation method for economizing an in-line 5-cylinder internal combustion engine comprising:
step 1: if the ignition sequence is the in-line 5-cylinder internal combustion engine with the 1 st cylinder, the 2 nd cylinder, the 4 th cylinder, the 5 th cylinder and the 3 rd cylinder, the 1 st cylinder is adjacent to the fan, and the 5 th cylinder is adjacent to the flywheel, the cylinder deactivation is closed for the 2 nd cylinder and the 5 th cylinder;
step 2: if the ignition sequence is the in-line 5-cylinder internal combustion engine with the 1 st cylinder, the 5 th cylinder, the 2 nd cylinder, the 4 th cylinder and the 3 rd cylinder, the 1 st cylinder is adjacent to the fan, and the 5 th cylinder is adjacent to the flywheel, the cylinder deactivation is closed for the 3 rd cylinder and the 5 th cylinder.
Further, in step 1: and the 2 nd cylinder is provided with a cylinder closing and stopping mechanism on the intake valve driving device and the exhaust valve driving device, and the 5 th cylinder is provided with a cylinder closing and stopping mechanism on the intake valve driving device and the exhaust valve driving device.
Further, in step 2: and the intake valve driving device and the exhaust valve driving device of the 3 rd cylinder are both provided with a cylinder closing and stopping mechanism, and the intake valve driving device and the exhaust valve driving device of the 5 th cylinder are both provided with a cylinder closing and stopping mechanism.
Further, the cylinder deactivation mechanism is a camshaft linear translation switching type mechanism.
Further, the vehicle ECU controls the corresponding cylinder deactivation action of the in-line 5-cylinder internal combustion engine according to the acceleration and deceleration intention of a driver and the working condition of the vehicle.
Compared with the prior art, the cylinder deactivation method for saving oil of the in-line 5-cylinder internal combustion engine has the following advantages:
the cylinder stopping method for saving oil of the in-line 5-cylinder internal combustion engine has obvious oil saving effect, has excellent performance in three aspects of vibration, output torque fluctuation and temperature difference among cylinders, can reduce the vibration and the output torque fluctuation and avoid the problem of cylinder eccentric wear caused by the temperature difference among the cylinders.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic diagram of a cylinder deactivation method for fuel economy in an in-line 5 cylinder internal combustion engine according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A cylinder deactivation method for economizing an in-line 5-cylinder internal combustion engine comprising:
step 1: if the ignition sequence is the in-line 5-cylinder internal combustion engine with the 1 st cylinder, the 2 nd cylinder, the 4 th cylinder, the 5 th cylinder and the 3 rd cylinder, the 1 st cylinder is adjacent to the fan, and the 5 th cylinder is adjacent to the flywheel, the cylinder deactivation is closed for the 2 nd cylinder and the 5 th cylinder;
step 2: if the ignition sequence is the in-line 5-cylinder internal combustion engine with the 1 st cylinder, the 5 th cylinder, the 2 nd cylinder, the 4 th cylinder and the 3 rd cylinder, the 1 st cylinder is adjacent to the fan, and the 5 th cylinder is adjacent to the flywheel, the cylinder deactivation is closed for the 3 rd cylinder and the 5 th cylinder.
In step 1: and the 2 nd cylinder is provided with a cylinder closing and stopping mechanism on the intake valve driving device and the exhaust valve driving device, and the 5 th cylinder is provided with a cylinder closing and stopping mechanism on the intake valve driving device and the exhaust valve driving device.
In step 2: and the intake valve driving device and the exhaust valve driving device of the 3 rd cylinder are both provided with a cylinder closing and stopping mechanism, and the intake valve driving device and the exhaust valve driving device of the 5 th cylinder are both provided with a cylinder closing and stopping mechanism.
The cylinder deactivation mechanism is a camshaft-shaped linear translation switching type mechanism.
In this embodiment, the camshaft linear translation switching mechanism is used to close the designated cylinder, and belongs to a control cylinder closing mechanism commonly used in the prior art.
The ECU of the vehicle controls the corresponding cylinder deactivation action of the in-line 5-cylinder internal combustion engine according to the acceleration and deceleration intention of a driver and the working condition of the vehicle.
In the embodiment, as shown in fig. 1, taking an in-line 5-cylinder internal combustion engine with the ignition sequence of 1 st cylinder, 2 nd cylinder, 4 th cylinder, 5 th cylinder and 3 rd cylinder as an example, the method of step 1 is adopted, and 3 cylinders are still used for driving the vehicle power system, so that the power is guaranteed. The interval between the combustion strokes of the 3 cylinders is only 2 times, namely, the angle between the 1 st cylinder and the 4 th cylinder and the angle between the 4 th cylinder and the 3 rd cylinder are all 108 degrees. Compared with the cylinder deactivation time interval of 180 degrees of a 4-cylinder engine in the prior art, the angle value is only 60 percent, so that the driving force continuity among cylinders is greatly improved, and the vibration and output torque fluctuation are obviously reduced.
The inline 5 cylinder engine has the advantages of being short in length and easy to arrange in the engine compartment of the whole vehicle, and the inline 5 cylinder engine can enable the vibration and torque fluctuation to generate rhythm of ' ● ○ ● ○ ● ● ○ 0 ● ○ 1 ● ● ○ 2 ● ○ ● … … ' (● ' represents in-cylinder combustion and vibration and driving torque, and ' ○ ' represents a certain cylinder without vibration and driving torque) by using the cylinder deactivation method, and compared with the monotonous ' ● ○ ● ○ ● ○ ● ○ ● ○ ● ○ … … ' when the inline 6 cylinder engine is deactivated, the inline 5 cylinder engine is more acceptable to human bodies.
When the 1 st cylinder is continuously and normally operated and generates heat in the 5 th cylinder internal combustion engine with the 1 st cylinder, the 2 nd cylinder, the 4 th cylinder, the 5 th cylinder and the 3 rd cylinder in the ignition sequence, the cylinder deactivation of the step 1 is adopted, and the situation that the heat is generated is not inferior to that of the internal combustion engine without the cylinder deactivation is adopted. When the cooling fan is arranged in a longitudinal row in a vehicle engine compartment, the 1 st cylinder can continuously and normally work to avoid the direct blowing of the cooling fan from leading the temperature of the cooling fan to be excessively reduced; in contrast thereto, arranging the first cylinder of a 5-cylinder engine to be deactivated does not have this effect. In the part of the 1 st cylinder, the 2 nd cylinder and the 3 rd cylinder, the 2 nd cylinder which has combustion heat loss during cylinder deactivation is positioned between the two normal working cylinders; the structural relationship among the three is that the heat generation and the heat conduction of the 1 st cylinder and the 3 rd cylinder are conducted to the 2 nd cylinder, so that the temperature of the cylinders is kept at an acceptable level. Meanwhile, in the 4 th cylinder and the 5 th cylinder, the 5 th cylinder which is lack of combustion heat during cylinder deactivation is close to the 4 th cylinder, the heating and heat conduction of the 4 th cylinder can keep the temperature of the 5 th cylinder at an acceptable level, the problem of cylinder eccentric wear caused by temperature difference among cylinders is effectively avoided, a complex cooling system (such as an electric control ball valve adopted by an Ecotec 2.0T engine of a general company and a 6-way cooling system of an electronic water pump) specially designed for cylinder deactivation of an engine in the prior art is not required, the production and manufacturing cost is reduced, and the fault risk existing after the cooling system is durably aged is also avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A method of fuel saving cylinder deactivation for an in-line 5 cylinder internal combustion engine, characterized by: the method comprises the following steps:
step 1: if the ignition sequence is the in-line 5-cylinder internal combustion engine with the 1 st cylinder, the 2 nd cylinder, the 4 th cylinder, the 5 th cylinder and the 3 rd cylinder, the 1 st cylinder is adjacent to the fan, and the 5 th cylinder is adjacent to the flywheel, the cylinder deactivation is closed for the 2 nd cylinder and the 5 th cylinder;
step 2: if the ignition sequence is the in-line 5-cylinder internal combustion engine with the 1 st cylinder, the 5 th cylinder, the 2 nd cylinder, the 4 th cylinder and the 3 rd cylinder, the 1 st cylinder is adjacent to the fan, and the 5 th cylinder is adjacent to the flywheel, the cylinder deactivation is closed for the 3 rd cylinder and the 5 th cylinder.
2. A cylinder deactivation method for economizing an in-line 5-cylinder internal combustion engine according to claim 1, characterized in that: in step 1: and the 2 nd cylinder is provided with a cylinder closing and stopping mechanism on the intake valve driving device and the exhaust valve driving device, and the 5 th cylinder is provided with a cylinder closing and stopping mechanism on the intake valve driving device and the exhaust valve driving device.
3. A cylinder deactivation method for economizing an in-line 5-cylinder internal combustion engine according to claim 1, characterized in that: in step 2: and the intake valve driving device and the exhaust valve driving device of the 3 rd cylinder are both provided with a cylinder closing and stopping mechanism, and the intake valve driving device and the exhaust valve driving device of the 5 th cylinder are both provided with a cylinder closing and stopping mechanism.
4. A cylinder deactivation method for economizing an in-line 5-cylinder internal combustion engine according to any one of claims 2 or 3, characterized in that: the cylinder deactivation mechanism is a camshaft-shaped linear translation switching type mechanism.
5. A cylinder deactivation method for economizing an in-line 5-cylinder internal combustion engine according to claim 1, characterized in that: the ECU of the vehicle controls the corresponding cylinder deactivation action of the in-line 5-cylinder internal combustion engine according to the acceleration and deceleration intention of a driver and the working condition of the vehicle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911285710.2A CN111022195B (en) | 2019-12-13 | 2019-12-13 | Cylinder deactivation method for oil saving of in-line 5-cylinder internal combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911285710.2A CN111022195B (en) | 2019-12-13 | 2019-12-13 | Cylinder deactivation method for oil saving of in-line 5-cylinder internal combustion engine |
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| CN111022195A true CN111022195A (en) | 2020-04-17 |
| CN111022195B CN111022195B (en) | 2022-07-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839279A (en) * | 2023-02-27 | 2023-03-24 | 潍柴动力股份有限公司 | Cylinder deactivation control method, device, equipment and storage medium |
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| JPH0666166A (en) * | 1992-08-18 | 1994-03-08 | Nippondenso Co Ltd | Output control for internal combustion engine |
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| CN102400795A (en) * | 2010-09-07 | 2012-04-04 | 福特环球技术公司 | Multi-cylinder internal combustion engine and method for operating a multi-cylinder internal combustion engine |
| CN107110033A (en) * | 2014-11-19 | 2017-08-29 | 舍弗勒技术股份两合公司 | Method and device for operating a multi-cylinder internal combustion engine |
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2019
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0666166A (en) * | 1992-08-18 | 1994-03-08 | Nippondenso Co Ltd | Output control for internal combustion engine |
| JPH07279699A (en) * | 1994-04-12 | 1995-10-27 | Toyota Motor Corp | Variable cylinder controller of odd number multi-cylinder engine |
| CN101054912A (en) * | 2006-04-12 | 2007-10-17 | 通用汽车环球科技运作公司 | Cylinder deactivation apparatus |
| CN201461111U (en) * | 2009-06-19 | 2010-05-12 | 长城汽车股份有限公司 | Cylinder deactivating and oil saving device for engine |
| CN102400795A (en) * | 2010-09-07 | 2012-04-04 | 福特环球技术公司 | Multi-cylinder internal combustion engine and method for operating a multi-cylinder internal combustion engine |
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| CN115839279A (en) * | 2023-02-27 | 2023-03-24 | 潍柴动力股份有限公司 | Cylinder deactivation control method, device, equipment and storage medium |
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