Heatable intake manifold suitable for methanol engine

Abstract

The utility model discloses a heatable intake manifold suitable for a methanol engine, which comprises an intake manifold main body and an intake manifold heating branch, interlayers are arranged in double walls of the intake manifold main body, the intake manifold heating branch comprises a temperature control throttle valve, an intake manifold interlayer and a reversing valve, the intake manifold interlayer is provided with a water inlet, and the reversing valve is provided with a water outlet. Fin plates are embedded in the air inlet manifold interlayer, electric heating wires are embedded in the air inlet manifold interlayer, a water inlet of the air inlet manifold interlayer is connected to a temperature control throttling valve through a water channel, an output port of the temperature control throttling valve is connected to a water outlet main pipe, and a water circulation pipeline passes through a wax type thermostat from the water outlet main pipe. The thermostat first water circulation of the wax type thermostat is that the wax type thermostat is connected with a reversing valve and then is connected to an engine cylinder sleeve, and the thermostat second water circulation connected with the output end of the wax type thermostat is that the wax type thermostat is connected to a water tank and is connected to the engine cylinder sleeve through the water tank. According to the utility model, the direct heating of the intake manifold is efficiently realized, and the heating efficiency of the intake mixed atmosphere is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of marine intake manifold premixed methanol engine, concretely relates to a kind of heated intake manifold suitable for methanol engine. BACKGROUND

[0002] Intake manifold premixing refers to that methanol nozzle sprays methanol at each cylinder intake manifold, and forms intake mixture atmosphere with fresh air at intake manifold, and methanol enters cylinder together via intake port. Due to the characteristics of methanol cylinder injection, methanol nozzle injection pressure cannot be too high, so there are problems of low intake mixture atmosphere temperature and difficult methanol spray vaporization in methanol engine under this type.

[0003] Therefore, a series of measures are adopted by each ship manufacturer to improve, and the measures are roughly divided into using electric energy, hot water and the like to heat methanol storage tank, external intervention method of machine body, using tail gas, circulating water and the like to heat intake air and heat methanol storage tank inside adjustment method according to different heat sources. These measures cannot directly act on intake manifold, or heating method for intake mixture atmosphere is clumsy and inefficient, safety is low and energy is wasted seriously. Therefore, a new method for directly and effectively heating intake manifold is urgently needed. UTILITY MODEL CONTENT

[0004] The utility model is to provide a kind of heated intake manifold suitable for methanol engine, overcome the deficiency of prior art proposed in background art, meet actual use demand.

[0005] The utility model solves the technical scheme that the existing problem is adopted: a kind of heated intake manifold suitable for methanol engine, including intake manifold main body, the double-wall inner side of the intake manifold main body is provided with interlayer, it is characterized in that:

[0006] The intake manifold further includes intake manifold heating branch 5, the intake manifold heating branch 5 includes temperature control throttle valve 51, intake manifold interlayer 52 and reversing valve 53, intake manifold interlayer 52 is provided with water inlet, the inside of intake manifold interlayer 52 is embedded with fin plate 521, and intake manifold interlayer 52 is embedded with electric heating wire 523.

[0007] The water inlet of intake manifold interlayer 52 is connected to temperature control throttle valve 51 through water channel, temperature control throttle valve 51 is connected to left branch of water outlet main pipe 1, and the water outlet of intake manifold interlayer 52 is connected to one end of reversing valve 53 through water channel.

[0008] The water circulation pipeline from the water outlet main pipe 1 right branch passes through the wax type thermostat 4, the output end of the wax type thermostat 4 is sequentially connected with the wax type thermostat 4, the reversing valve 53 and the engine cylinder sleeve 2, and the first water circulation of the thermostat is formed; the output end of the wax type thermostat 4 is sequentially connected with the wax type thermostat 4 and the water tank 3, and the second water circulation of the thermostat is formed from the water tank to the engine cylinder sleeve 2.

[0009] Preferably, the temperature control throttle valve circuit is connected to a controller, and the controller is electrically connected with the electric heating wire and the reversing valve.

[0010] Preferably, the fin plates are arranged in a spiral shape along the manifold air inlet direction in each manifold interlayer.

[0011] Preferably, the water outlet of the front manifold interlayer and the water inlet of the next manifold are connected, and the manifold interlayers are connected in series.

[0012] Preferably, the electric heating wire is embedded into the inner wall of each manifold interlayer in a spiral shape.

[0013] Preferably, the water circulation from the water outlet main pipe to the reversing valve to the engine cylinder sleeve through the temperature control thermostat and the manifold interlayer becomes the water circulation of the intake manifold.

[0014] Preferably, when the wax type thermostat is closed, the water circulation of the intake manifold and the second water circulation of the thermostat are in parallel.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The utility model can heat the intake manifold, effectively improve the temperature of the air, the methanol nozzle, the methanol chamber of the nozzle at the intake manifold, and further improve the temperature of the intake mixed gas, accelerate the methanol spray gasification, and improve the engine combustion performance.

[0017] 2. The utility model adds an intake manifold heating branch on the basis of borrowing the original engine cooling system water circulation loop. The utility model can automatically control the water quantity of the intake manifold heating branch according to different water temperatures. The normal work of the original engine cooling system water circulation loop is not disturbed, so the utility model is particularly suitable for upgrading and modification of old models. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described below in combination with the drawings and embodiments.

[0019] Fig. 1 It is a whole structure schematic view of the utility model of the intake manifold that can be heated and is suitable for a methanol engine,

[0020] Fig. 2The utility model relates to a kind of intake manifold heating branch structure schematic diagram of intake manifold suitable for methanol engine's heatable,

[0021] Fig. 3 The utility model relates to a kind of intake manifold sandwich structure schematic diagram of intake manifold suitable for methanol engine's heatable,

[0022] In the drawing: 1, water outlet main pipe;2, engine cylinder sleeve;3, water tank;4, wax type thermostat;5, intake manifold heating branch;51, temperature control throttle;52, intake manifold sandwich;521, fin plate;522, sandwich;523, heating wire;53, reversing valve. DETAILED DESCRIPTION

[0023] As some terms are used in the description and claims to refer to certain components. Those skilled in the art should understand that hardware manufacturers may use different names to refer to the same component. The description and claims of this specification do not distinguish components by name, but by the functional difference between components. As mentioned throughout the specification and claims, "including" is an open term, which should be interpreted as "including but not limited to". "Approximately" means within an acceptable error range, and those skilled in the art can solve the technical problem within a certain error range, and basically achieve the technical effect.

[0024] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0025] In the utility model, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or electrically connected;It can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0026] The drawing is a kind of intake manifold suitable for methanol generator, and the utility model is further described in detail below in conjunction with the drawings.

[0027] As Figs. 1-3As shown, the embodiment discloses a kind of heated air intake manifold suitable for methanol generator, including air intake manifold body structure and air intake manifold heating branch 5.

[0028] The fin plate 521 is embedded in the manifold interlayer of the air intake manifold body structure, and the fin plate 521 is arranged in spiral along the air intake direction, for extending the water flow path in the manifold interlayer, increasing the heat exchange area, and improving the heating efficiency.The manifold interlayer 52 is also embedded with an electric heating wire 523.When the water temperature is in a low temperature state, the wax thermostat 4 is opened, and the air intake manifold water circulation is cut off by the reversing valve 53, and the electric heating wire 523 starts to heat the gas in the manifold.

[0029] The specific structure of the air intake manifold heating branch 5 is that the water inlet of the air intake manifold interlayer 52 is connected to the temperature control throttle valve 51 through a water channel, the temperature control throttle valve 51 is connected to the left branch of the water outlet main pipe 1, the water circulation pipeline passes through the wax thermostat 4 from the right branch of the water outlet main pipe 1, the output end of the wax thermostat 4 is connected to the thermostat first water circulation, the wax thermostat 4 is connected to the reversing valve 53 and then connected to the engine cylinder sleeve 2, the output end of the wax thermostat 4 is connected to the thermostat second water circulation, the wax thermostat 4 is connected to the water tank 3, and the water tank is connected to the engine cylinder sleeve 2.The water outlet of the air intake manifold interlayer 52 is connected to the other end of the temperature control throttle valve 51 through a water channel.

[0030] The air intake manifold is also provided with a controller, which is connected to the electric heating wire 523, the reversing valve 53 and the temperature control throttle valve 51.The controller is used to read the temperature data information in the temperature control throttle valve 51, and then control the state of the electric heating wire 523 and the reversing valve 53.

[0031] The working mode of the specific embodiment is as follows:

[0032] When the water temperature in the engine cylinder sleeve 2 is in a low temperature state, the wax thermostat 4 is in an open state, and the reversing valve 53 is connected to the port of the wax thermostat 4, so that the manifold water outlet end is in a cut-off state.At this time, the electric heating wire 523 is opened, and the air intake manifold is heated.The water circulation state is the thermostat first water circulation state, i.e., from the right branch of the water outlet main pipe 1, through the wax thermostat 4 and the reversing valve 53, back to the engine cylinder sleeve 2, and from the engine cylinder sleeve 2 participating in the engine cooling system water circulation.

[0033] When the engine is running, the water temperature in the engine cylinder liner 2 rises, the wax-type thermostat 4 is in the closed state, and the reversing valve 53 is connected to the manifold water inlet end. At this time, the water circulation state is that the intake manifold water circulation and the thermostat second water circulation of the wax-type thermostat 4 are in a parallel state, that is, starting from the two water outlet ends of the water outlet main pipe, one water path is the thermostat second water circulation path that flows through the wax-type thermostat 4, the water tank 3, and then flows into the engine cylinder liner 2 to participate in the engine cooling system water circulation; the other water path is the intake manifold water circulation path that flows through the temperature control throttle valve 51, the intake manifold interlayer 52, and the reversing valve 53, and then flows into the engine cylinder liner 2 to participate in the engine cooling system water circulation.

[0034] If the water temperature in the engine cylinder liner 2 exceeds the set critical threshold value, which is 60℃ in the embodiment, the temperature control throttle valve 51 is in the flow limiting state, at which time the water circulation state is the thermostat second water circulation state, that is, the water path is drawn from the right branch of the water outlet main pipe, flows through the wax-type thermostat 4, the water tank 3, and then flows into the engine cylinder liner 2 to participate in the engine cooling system water circulation path. This plays a role in rapid cooling and ensures that the engine is in a suitable temperature state. When the temperature is lower than the critical threshold value, the water circulation state returns to the parallel state of the intake manifold water circulation and the thermostat second water circulation.

[0035] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. A heatable intake manifold suitable for a methanol engine, comprising an intake manifold body, wherein a layer is provided within the double wall of the intake manifold body, and wherein: The intake manifold further comprises an intake manifold heating branch (5), the intake manifold heating branch (5) comprising a temperature control throttle valve (51), an intake manifold interlayer (52) and a reversing valve (53), the intake manifold interlayer (52) being provided with a water inlet, a fin plate (521) being embedded in the intake manifold interlayer (52), and a heating wire (523) being embedded in the intake manifold interlayer (52); The water inlet of the intake manifold interlayer (52) is connected to the temperature control throttle valve (51) through a water channel, the temperature control throttle valve (51) is connected to the left branch of the water outlet main pipe (1), and the water outlet of the intake manifold interlayer (52) is connected to one end of the reversing valve (53) through a water channel. The water circulation pipeline passes through the wax thermostat (4) from the right branch of the water outlet main pipe (1); the output end of the wax thermostat (4) is sequentially connected to the wax thermostat (4), the reversing valve (53) and the engine cylinder liner (2), forming the first water circulation of the thermostat; the output end of the wax thermostat (4) is sequentially connected to the wax thermostat (4) and the water tank (3), and is connected to the engine cylinder liner (2) by the water tank, forming the second water circulation of the thermostat.

2. A heated intake manifold suitable for a methanol engine according to claim 1, characterized in that: The temperature control throttle valve (51) is connected to a controller, and the controller is electrically connected to the heating wire (523) and the reversing valve (53).

3. The heated intake manifold suitable for a methanol engine according to claim 1, characterized in that: The fin plates (521) are arranged in a spiral shape in each manifold interlayer along the manifold air inlet direction.

4. The heated intake manifold suitable for a methanol engine according to claim 1, characterized in that: The water outlet of the preceding manifold interlayer of the intake manifold body is connected to the water inlet of the next manifold, and the manifold interlayers are connected in series.

5. The heated intake manifold suitable for a methanol engine according to claim 1, characterized in that: The heating wire (523) is spirally distributed and embedded in the inner wall of each manifold interlayer.

6. The heated intake manifold suitable for a methanol engine according to claim 1, characterized in that: The water outlet main pipe (1) is sequentially connected to a temperature control thermostat valve (51), an intake manifold interlayer (52), a reversing valve (53) and an engine cylinder liner (2), and this water circulation is an intake manifold water circulation.

7. A heatable intake manifold suitable for a methanol engine according to claim 6, characterized in that: When the wax thermostat is closed, the intake manifold water cycle and the thermostat second water cycle are in a parallel relationship.

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