Device and method for controlling a compressor of a vehicle

Abstract

Device for controlling a compressor (45) of a vehicle, comprising: a sensor module (10) comprising a passenger compartment temperature sensor (11) that detects a passenger compartment temperature of a vehicle, an outside temperature sensor (13) that detects an outside temperature of the vehicle, an evaporator temperature sensor (15) that detects a temperature of a coolant in an evaporator (43), ie an evaporator temperature, an engine speed sensor (17) that detects the speed of an engine, and a throttle position sensor (19) that detects a throttle opening; an air conditioning system (40) comprising a condenser (41) which condenses and liquefies the refrigerant, the evaporator (43) which evaporates the liquefied refrigerant, the compressor (45) which compresses the refrigerant, a temperature control flap (47) which controls the temperature of the air flowing into the passenger compartment of the vehicle, an inlet flap (48) which selectively allows the inside air or the outside air to flow into the passenger compartment of the vehicle, and a fan (49) which conveys the air to the inlet flap (48); and a control area (20) which controls the operation of the air conditioning system (40), wherein the control section (20) is configured to set an acceleration mode and a permitted temperature in this acceleration mode when an acceleration condition occurs, and to reduce the operation of the compressor (45) depending on a difference between the evaporator temperature and the permitted temperature, wherein the control portion (20) is further configured to control the temperature control door (47), the inlet door (48) and the blower (49) during the reduction of the operation of the compressor (45) such that the temperature of the air supplied to the passenger compartment is lowered when the evaporator temperature is higher than a target temperature.

Description

[0001] The invention relates to an apparatus and method for controlling a vehicle compressor, and more particularly to an apparatus and method for controlling a vehicle compressor which improves acceleration performance and fuel consumption efficiency and maintains comfort in a vehicle passenger compartment by reducing operation of the compressor during acceleration.

[0002] Recently, many countries have tightened emissions and fuel consumption regulations to mitigate global warming and prepare for the depletion of oil reserves. Improving fuel consumption efficiency requires improvements to auxiliary powertrain systems. An air conditioning system, which incorporates an air-cooling system, is one such auxiliary system.

[0003] Such air conditioning systems feature a compressor. The compressor selectively absorbs engine torque, transmitted from a pulley through the engagement or disengagement of an electric clutch, and compresses a refrigerant flowing into it from an evaporator. The refrigerant then flows from the compressor to a condenser. Various types of compressors exist, and variable-capacity compressors are widely used in vehicles.

[0004] In a variable-capacity compressor, a pressure control valve changes the refrigerant pressure based on the load, allowing the angle of the inclined plate to be controlled. When the angle of the inclined plate changes, the piston stroke changes, and the refrigerant discharge can be controlled accordingly.

[0005] Operating the compressor requires a high amount of drive torque. Because the compressor receives drive torque from the pulley, which is connected to the engine's crankshaft via a belt, the compressor operates primarily depending on the engine speed without regard for the target cooling capacity. Additionally, the compressor may operate excessively, and fuel efficiency may deteriorate as occupants operate the air conditioner for comfort. These problems occur primarily during acceleration or deceleration.

[0006] Reference is made to the document US 2008 / 0 060 369 A1, which describes an air conditioning system for a vehicle, which has an electronic control unit that executes a control routine for controlling the cooling capacity of a cooling circuit during vehicle acceleration.The control routine includes the steps of detecting a required vehicle acceleration level, detecting a temperature of the evaporator or a temperature correlated with the temperature of the evaporator at the time of vehicle acceleration, selecting a cooling capacity of the refrigeration cycle during the acceleration period based on the required acceleration level and the detected temperature, generating a capacity control signal for determining an amount of refrigerant discharged from the compressor based on the selected cooling capacity during the acceleration period, and outputting the capacity control signal to the compressor.

[0007] Reference is further made to the documents EP 1 623 861 A1 and KR 10 2009 0 131 928 A, in which further various devices and methods for controlling a vehicle compressor are described.

[0008] The object of the present invention is to provide a device and method for controlling a vehicle compressor, which, by reducing compressor operation during acceleration, have the advantages of improved acceleration performance and fuel consumption efficiency, while maintaining passenger compartment comfort. This object is achieved by the features of the independent claims. Further embodiments are evident from the respective subclaims.

[0009] To achieve the object, the invention provides a device for controlling a compressor of a vehicle, comprising: a sensor module that includes a passenger compartment temperature sensor that detects a passenger compartment temperature of the vehicle, an outside temperature sensor that detects an outside temperature of the vehicle, an evaporator temperature sensor that detects a temperature of a coolant in an evaporator, i.e., an evaporator temperature, an engine speed sensor that detects the speed of an engine, and a throttle position sensor that detects a throttle opening, an air conditioning system that includes a condenser that condenses and liquefies the coolant, the evaporator that evaporates the liquefied coolant, the compressor that compresses the coolant, a temperature control valve that controls the temperature of the air flowing into the passenger compartment of the vehicle, an inlet valve,which selectively allows the inside air or the outside air to flow into the passenger compartment of the vehicle, and has a fan that delivers the air to the inlet flap, and a control section that controls the operation of the air conditioning system, wherein the control section is configured to set an acceleration mode and a permitted temperature in this acceleration mode when an acceleration condition occurs, and to reduce the operation of the compressor depending on the difference between the evaporator temperature and the permitted temperature, wherein the control section is further configured to control the temperature control flap, the inlet flap, and the fan while reducing the operation of the compressor such that the temperature of the air supplied to the passenger compartment is lowered when the evaporator temperature is higher than a target temperature.

[0010] The permitted temperature in acceleration mode can be set depending on the outside temperature of the vehicle.

[0011] The control section may increase the operation of the compressor according to a target increase rate of the operation of the compressor when a release condition occurs during the reduction of the operation of the compressor or the time elapsed in the reduction of the operation of the compressor is greater than or equal to a maximum time.

[0012] The control range can increase the operation of the compressor until the operation of the compressor reaches a target operation of the compressor.

[0013] The control section may control the temperature control door to lower the temperature of the air supplied to the passenger compartment when the evaporator temperature is higher than a second target temperature during the increase in operation of the compressor.

[0014] The control section may, while increasing the operation of the compressor, control the temperature control door, the inlet door, and the wind speed of the blower such that the temperature of the air supplied to the passenger compartment is lowered when the evaporator temperature is higher than a second target temperature.

[0015] To achieve the object, the invention further provides: a method for controlling a compressor of a vehicle equipped with an air conditioning system, comprising a condenser that condenses and liquefies the refrigerant, an evaporator that evaporates the liquefied refrigerant, the compressor that compresses the refrigerant, a temperature control flap that controls the temperature of the air flowing into the passenger compartment of the vehicle, an inlet flap that selectively allows the inside air or the outside air to flow into the passenger compartment of the vehicle, and a fan that conveys the air to the inlet flap, the method comprising: a) determining whether an acceleration condition occurs, b) determining whether an evaporator temperature is lower than a permissible temperature in a case where the acceleration condition occurs, c) reducing the operation of the compressor based on a difference between the evaporator temperature and the permissible temperature,if the evaporator temperature is lower than the allowable temperature, d) Determine whether the evaporator temperature is higher than a target temperature while reducing the operation of the compressor, e) Control the temperature control flap, the inlet flap and the fan to lower the temperature of the air supplied to the passenger compartment if the evaporator temperature is higher than the target temperature.

[0016] The allowable temperature may be varied according to an acceleration mode set based on a throttle opening and an engine speed, and the allowable temperature in this acceleration mode may be set depending on the outside temperature of the vehicle.

[0017] In step e), the intake flap may be controlled based on a difference between the passenger compartment temperature and the outside temperature or the outside temperature, and the fan may be controlled based on an inside air ratio.

[0018] The method for controlling the vehicle compressor may further comprise: g) determining whether an enable condition occurs or the time spent reducing the operation of the compressor is greater than or equal to a maximum time, wherein steps b) to e) are repeated if, in step g), the enable condition does not occur or the time spent reducing the operation of the compressor is less than the maximum time.

[0019] In a case where the evaporator temperature is greater than or equal to the allowable temperature in step b) or the enable state occurs in step g) or the time spent reducing the operation of the compressor is greater than or equal to the maximum time, the method may further comprise: h) increasing the operation of the compressor according to a target increase rate of the operation of the compressor, i) determining whether the operation of the compressor is lower than a target operation of the compressor, j) determining whether the evaporator temperature is higher than the target temperature when the operation of the compressor is lower than the target operation of the compressor, and k) controlling the temperature control door, the inlet door and the blower so that the temperature of the air supplied to the passenger compartment is lowered when the evaporator temperature is higher than the target temperature.

[0020] Steps h) to k) may be repeated if the evaporator temperature is less than or equal to the target temperature in step j) or step k).

[0021] In step k), the intake flap may be controlled based on the difference between the passenger compartment temperature and the outside temperature or the outside temperature and the fan may be controlled based on the inside air ratio.

[0022] The control of the compressor may be terminated when the operation of the compressor has reached the target operation of the compressor in step i).

[0023] The methods and apparatus of the invention have other features and advantages which will be apparent from and will be particularly pointed out in the accompanying drawings, which are incorporated herein, and the following detailed description of the invention, which together serve to explain certain principles of the invention.

[0024] About the drawings: Fig. 1 is a block diagram of an exemplary apparatus for controlling a vehicle compressor according to the invention. Fig. Figure 2 is a diagram illustrating the inventive concept. Fig. 3 is a flowchart of an exemplary method for controlling a vehicle compressor according to the invention. Fig. Figure 4 is a graph showing the state of an open throttle valve and an engine speed when entering or exiting each acceleration mode. Fig. Figure 5 is a graph showing an allowable temperature as a function of an outside temperature at different acceleration conditions. Fig. Figure 6 is a graph showing a relationship between the operation of a compressor and a temperature difference. Fig. Figure 7 is a graph showing an indoor air ratio as a function of a temperature difference. Fig. 8 is a graph showing a fan wind speed depending on an outside air mode, a partial inside air mode, and an inside air mode, respectively. Fig. Figure 9 is a graph showing the operation of a compressor as a function of time.

[0025] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it is to be understood that the description is not intended to limit the invention to these exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also other embodiments that may be included within the scope of the invention as defined by the appended claims.

[0026] As in Fig. 1, a device for controlling a vehicle compressor according to various embodiments of the invention comprises a sensor module 10, a control section 20, an actuator 30, an air conditioning system 40 and an injection device 50.

[0027] The sensor module 10 includes a passenger compartment temperature sensor 11, an outside temperature sensor 13, an evaporator temperature sensor 15, an engine speed sensor 17, and a throttle position sensor 19. Additionally, the sensor module 10 further includes sensors for changing (e.g., a vehicle speed sensor, a brake sensor, etc.) and / or sensors for controlling an engine (e.g., an exhaust temperature sensor, an oxygen sensor, etc.).

[0028] The passenger compartment temperature sensor 11 detects a passenger compartment temperature of the vehicle and transmits a corresponding signal to the control area 20.

[0029] The outside temperature sensor 13 detects an outside temperature of the vehicle and transmits a corresponding signal to the control area 20.

[0030] The evaporator temperature sensor 15 detects a temperature of a refrigerant flowing through an evaporator and transmits a corresponding signal to the control section 20.

[0031] The engine speed sensor 17 detects a speed of an engine based on a phase change of a crankshaft and transmits a corresponding signal to the control section 20.

[0032] The throttle valve position sensor 19 detects a throttle valve opening in response to an actuation of an accelerator pedal and transmits a corresponding signal to the control section 20.

[0033] The control section 20 is electrically coupled to the sensor module 10 so that signals corresponding to the values ​​detected by the sensor module 10 are received, and it controls the injector 50 and the air conditioning system 40 based on the signals. Various control units, such as a transmission control unit that controls the vehicle's transmission, an engine control unit that controls the engine, and an air conditioning control unit that controls the air conditioning system 40, can be used in the vehicle, and the control section 20 in this description includes all the control units used in the vehicle. In particular, it should be understood that the control section 20 includes all the control sections suitable for performing a method for controlling a compressor according to various embodiments of the invention.

[0034] The actuator 30 is electrically coupled to the control section 20 and actuates the air conditioning system 40 and / or the fuel injector 50 according to a control signal transmitted from the control section 20. A solenoid device may be used as the actuator 30, and the control signal may be a tactile signal applied to the solenoid device.

[0035] The air conditioning system 40 includes all the devices used to heat, ventilate, and cool the passenger compartment of the vehicle. Specifically, the air conditioning system 40 includes a condenser 41, an evaporator 43, a compressor 45, a temperature control valve 47, an intake valve 48, and a blower 49. The air conditioning system 40 may include various components not described in this specification.

[0036] The condenser 41 condenses and liquefies the refrigerant, the evaporator 43 evaporates the liquefied refrigerant and the compressor 45 compresses the refrigerant.

[0037] In addition, the temperature control flap 47 controls a temperature of the air supplied to the passenger compartment of the vehicle by mixing warm air with cold air, controls the inlet flap 48 such that the inside air, the outside air, or a mixture of the inside air and the outside air flows into the passenger compartment of the vehicle, the blower 49 supplies the air to the inlet flap 48.

[0038] Such an air conditioning system 40 is well known to the person skilled in the art and its detailed description is omitted.

[0039] The injector 50 injects fuel to drive the vehicle (in particular the engine).

[0040] A solid line in Fig. 2 illustrates the cooling capacity and operation (load) of the compressor according to the prior art, and a dashed line illustrates the cooling capacity and operation (load) of the compressor according to various embodiments of the invention.

[0041] When the vehicle accelerates, the engine speed is increased excessively, and the compressor, according to the prior art, also operates excessively. Therefore, the cooling capacity and compressor operation (load) are increased excessively.

[0042] According to the inventive concept, when the vehicle accelerates, the compressor's operation (load) is gradually increased to a target compressor operation after being reduced by a predetermined amount. Accordingly, the cooling capacity is gradually increased to a target cooling capacity after being temporarily reduced. Since excessive compressor operation is prevented and the energy consumed for compressor operation is reduced when the vehicle accelerates, acceleration performance and fuel consumption efficiency are improved.

[0043] A method for controlling a vehicle compressor which implements the inventive concept is described with reference to Fig. 3 to 9 described.

[0044] As in Fig. As shown in Figure 3, in a state where the vehicle is traveling, the control section 20 controls the passenger compartment temperature of the vehicle in step S110. In this state, the control section 20 determines whether an acceleration state occurs in step S120. The acceleration state (solid line) and the release state (dashed line) in each acceleration mode are shown in Fig. 4. Such an acceleration state and release state, depending on the engine speed and throttle opening, are defined in a map. According to various embodiments of the invention, the control section 20 determines the acceleration mode when the condition for an acceleration state is met, thereby improving the accuracy of compressor control. In this way, the acceleration mode includes a rapid acceleration mode and a slow acceleration mode. The acceleration mode can be further subdivided if necessary.

[0045] As in Fig. Additionally, as shown in Figure 4, an entry condition and a release condition are set differently for each acceleration mode. Frequent changes in the control states can be avoided by setting the entry condition and the release condition differently for each acceleration mode. That is, if the entry condition and the release condition are the same for each acceleration mode, the control state may change frequently when the engine is operating at the limit of the acceleration state. This may degrade fuel consumption efficiency. Therefore, frequent changes in the control state and the degradation of fuel consumption efficiency can be prevented by setting the entry condition and the release condition differently for each acceleration mode.

[0046] Step S120 will be described in detail below. The control section 20 determines whether the entry condition for a rapid acceleration mode occurs or the entry condition for a slow acceleration mode occurs when the acceleration state occurs. The reason why the acceleration modes are set as described above is that a permissible temperature, which is the basis for the reduction control of the operation of the compressor, is determined in each acceleration state (with reference to Fig. 5) is determined differently.

[0047] If the acceleration state does not occur at step S120, the control section 20 proceeds to perform a passenger compartment temperature control at step S110.

[0048] When the acceleration state occurs at step S120, the control section 20 sets the acceleration mode and the allowable temperature in this acceleration mode as shown in Fig. 5 shown, fixed.

[0049] A permissible temperature is an evaporator temperature corresponding to the air temperature required to maintain passenger compartment comfort. If the compressor's operation is reduced after the acceleration condition occurs, the temperature of the air supplied to the passenger compartment will increase. Therefore, the compressor's operation should be increased again to lower the temperature of the air supplied to the passenger compartment. This impairs fuel consumption efficiency. To solve such problems, the compressor's operation must be reduced until the evaporator temperature reaches the permissible temperature.

[0050] Such a permissible temperature is determined in the acceleration mode depending on the vehicle's exterior temperature. When the vehicle's exterior temperature is low, the temperature of the air supplied to the passenger compartment can be sufficiently lowered by controlling the temperature control door 47, the intake door 48, and the blower 49 without increasing the compressor operation, even if the permissible temperature of the evaporator is high.

[0051] However, at the same ambient temperature, the allowable temperature in rapid acceleration mode is higher than the allowable temperature in slow acceleration mode. Since high torque is required during acceleration in rapid acceleration mode, the cooling performance is slightly reduced, and acceleration performance is improved by setting the allowable temperature in rapid acceleration mode to a high value.

[0052] If the allowable temperature is set as described above, the control section 20 determines in step S130 whether the evaporator temperature is lower than the allowable temperature. If the evaporator temperature is greater than or equal to the allowable temperature in step S130, the control section 20 proceeds to step S180 and does not reduce the operation of the compressor. On the other hand, if the evaporator temperature is lower than the allowable temperature in step S130, the control section 20 reduces the operation of the compressor in step S140. The operation of the compressor is as in Fig. 6, the operating intensity is reduced based on the difference between the evaporator temperature and the permissible temperature. That is, the reduction in operation as a function of the temperature difference is defined in a characteristic map. It is shown herein by way of example that the operating intensity is proportional to the temperature difference, but the inventive concept is not limited to this.

[0053] Next, the control section 20 determines in step S150 whether the evaporator temperature is greater than or equal to a target temperature. Generally, when the operation of the compressor is reduced, the evaporator temperature increases and the temperature of the air supplied to the passenger compartment also increases. This may deteriorate the comfort in the passenger compartment. Therefore, if the evaporator temperature in step S150 is higher than the target temperature, the control section 20 controls the temperature control door 47, the inlet door 48, and the blower 49 in step S160 to suppress an increase in the temperature of the air supplied to the passenger compartment. That is, the temperature control door 47 is controlled based on the difference between the temperature of the air supplied to the passenger compartment in step S110 and the current temperature of the air supplied to the temperature control door 47. The inlet door 48 is, as shown in Fig. 7, based on a difference between the passenger compartment temperature and the outside temperature or the outside temperature. The wind speed of the fan 49 is controlled as shown in Fig. 8, based on an inside air ratio (a ratio of the inside air to the air supplied to the passenger compartment).

[0054] Specifically, the temperature control flap 47 is controlled to lower the temperature of the air supplied to the passenger compartment. For this purpose, the ratio of the inside air to the outside air is controlled by the intake flap 48, and the speed of the inside air and the outside air is controlled by the fan 49.

[0055] If the evaporator temperature is lower than the target temperature at step S150, the control section 20 does not control the temperature control door 47, the inlet door 48 and the blower 49 and proceeds to step S170.

[0056] In step S170, the control section 20 determines whether the release state is met or the time elapsed in reducing the compressor's operation is greater than or equal to a maximum time. If the release state is not met or the time elapsed in reducing the compressor's operation is shorter than the maximum time, the control section 20 continuously repeats steps S130 to S170.

[0057] Meanwhile, if the release state occurs at step S170 because the operation of the evaporator cannot be reduced, the control section 20 proceeds to step S180. In addition, if the elapsed time in reducing the operation of the compressor at step S170 is greater than or equal to the maximum time, the control section 20 determines that acceleration is continuously performed (for example, in a case where the vehicle is traveling uphill) and proceeds to step S180 for passenger compartment comfort.

[0058] Steps S180 to S210 are steps for preparing for normal operation of the compressor 45. If the evaporator temperature is greater than or equal to the allowable temperature at step S130, the temperature of the air supplied to the passenger compartment is higher than the air required to maintain comfort in the passenger compartment. In this case, the temperature of the air supplied to the passenger compartment is increased by increasing the operation of the compressor to a target operation of the compressor, and the passenger compartment temperature control is performed normally. At this time, the fuel injection amount is increased as the operation of the compressor is rapidly increased. Therefore, the operation of the compressor is gradually increased to prevent fuel consumption efficiency and comfort from deteriorating.

[0059] For this purpose, the control section 20 increases the operation of the compressor in step S180 according to a target increase rate of the operation of the compressor. The target increase rate of the operation of the compressor is determined as shown in Fig. 9, depending on a target position of the temperature control flap 47 and a reference target increase rate of compressor operation. The target increase rate of compressor operation A rate is shown in a right diagram in Fig. 9 as a dashed line. That is, assuming that the distance from a predetermined position of the temperature control flap when the outside temperature is 0°C to the target position of the temperature control flap is α and the distance from the predetermined position of the temperature control flap when the outside temperature is 0°C to a minimum position of the temperature control flap is β, the target increase rate of the operation of the compressor A targetcalculated using the following equation. Atarget=Arate*(α / β)

[0060] The reference target increase rate of compressor A operation rate represents an increase rate of compressor operation used to increase compressor operation in a normal state. Since the compressor operation is controlled according to the target increase rate of compressor operation A target By increasing the compressor speed, which in various embodiments of the invention is lower than the reference target increase rate of compressor operation, the compressor operation can be prevented from being increased rapidly. Therefore, deterioration of fuel consumption efficiency can be avoided.

[0061] After step S180 is executed, the control section 20 determines in step S190 whether the operation of the compressor is lower than the target operation of the compressor. That is, it is determined whether the operation of the compressor reaches the target operation of the compressor. If the operation of the compressor reaches the target operation of the compressor in step S190, the control section 20 ends the method for controlling the compressor according to various embodiments of the invention and returns to step S110. If the operation of the compressor is lower than the target operation of the compressor in step S190, the control section 20 determines in step S200 whether the evaporator temperature is higher than the second target temperature.

[0062] If the evaporator temperature is less than or equal to the second target temperature in step S200, the control section 20 continuously repeats steps S180 to S200.

[0063] If the evaporator temperature is higher than the second target temperature at step S200, the control section 20 controls the temperature control door 47, the intake door 48, and the blower 49 at step S210 to suppress the rise in the temperature of the air supplied to the passenger compartment. Since step S210 is the same as step S160, its detailed description is omitted.

[0064] According to the invention, the operation of a compressor during acceleration is reduced. Therefore, acceleration performance and fuel consumption efficiency can be improved.

[0065] Additionally, a temperature control flap, an intake flap, and a blower are controlled to prevent a rise in the temperature of the air supplied to the passenger compartment in accordance with the reduction in compressor operation. Comfort can therefore be ensured.

Claims

[1] Device for controlling a compressor (45) of a vehicle, comprising: a sensor module (10) comprising a passenger compartment temperature sensor (11) that detects a passenger compartment temperature of a vehicle, an outside temperature sensor (13) that detects an outside temperature of the vehicle, an evaporator temperature sensor (15) that detects a temperature of a coolant in an evaporator (43), ie an evaporator temperature, an engine speed sensor (17) that detects the speed of an engine, and a throttle position sensor (19) that detects a throttle opening; an air conditioning system (40) comprising a condenser (41) which condenses and liquefies the refrigerant, the evaporator (43) which evaporates the liquefied refrigerant, the compressor (45) which compresses the refrigerant, a temperature control flap (47) which controls the temperature of the air flowing into the passenger compartment of the vehicle, an inlet flap (48) which selectively allows the inside air or the outside air to flow into the passenger compartment of the vehicle, and a fan (49) which conveys the air to the inlet flap (48); and a control area (20) which controls the operation of the air conditioning system (40), wherein the control section (20) is configured to set an acceleration mode and a permitted temperature in this acceleration mode when an acceleration condition occurs, and to reduce the operation of the compressor (45) depending on a difference between the evaporator temperature and the permitted temperature, wherein the control portion (20) is further configured to control the temperature control door (47), the inlet door (48) and the blower (49) during the reduction of the operation of the compressor (45) such that the temperature of the air supplied to the passenger compartment is lowered when the evaporator temperature is higher than a target temperature. [2] The apparatus according to claim 1, wherein the allowable temperature in the acceleration mode is set depending on the outside temperature of the vehicle. [3] The apparatus according to claim 1, wherein the control portion (20) increases the operation of the compressor (45) according to a target increase rate of the operation of the compressor (45) when a release state occurs during the reduction of the operation of the compressor (45) or a time during which the operation of the compressor (45) is reduced is greater than or equal to a maximum time. [4] The apparatus according to claim 3, wherein the control portion (20) increases the operation of the compressor (45) until the operation of the compressor (45) reaches a target operation of the compressor (45). [5] The apparatus according to claim 3, wherein the control portion (20) controls the temperature control door (47) during the increase of the operation of the compressor (45) such that the temperature of the air supplied to the passenger compartment is lowered when the evaporator temperature is higher than a second target temperature. [6] The apparatus according to claim 3, wherein the control portion (20) controls the temperature control door (47), the inlet door (48) and the wind speed of the blower (49) during the increase of the operation of the compressor (45) such that the temperature of the air supplied to the passenger compartment is lowered when the evaporator temperature is higher than a second target temperature. [7] A method for controlling a compressor (45) of a vehicle provided with an air conditioning system (40), comprising a condenser (41) which condenses and liquefies the coolant, an evaporator (43) which evaporates the liquefied coolant, the compressor (45) which compresses the coolant, a temperature control flap (47) which controls the temperature of the air flowing into the passenger compartment of the vehicle, an inlet flap (48) which selectively allows the inside air or the outside air to flow into the passenger compartment of the vehicle, and a fan (49) which conveys the air to the inlet flap (48), the method comprising: a) Determine whether an acceleration condition occurs (S120); b) determining whether an evaporator temperature is lower than a permissible temperature in a case that the acceleration state occurs (S130); c) reducing the operation of the compressor (45) based on a difference between the evaporator temperature and the allowable temperature when the evaporator temperature is lower than the allowable temperature (S140); d) determining whether the evaporator temperature is higher than a target temperature while reducing the operation of the compressor (45) (S150); and e) controlling the temperature control flap (47), the inlet flap (48) and the blower (49) to lower the temperature of the air supplied to the passenger compartment when the evaporator temperature is higher than the target temperature (S160). [8] A method according to claim 7, wherein the allowable temperature is varied according to an acceleration mode which is set based on a throttle opening and an engine speed, and the allowable temperature in this acceleration mode is set depending on the outside temperature of the vehicle. [9] The method according to claim 7, wherein in step e) the inlet flap (48) is controlled based on the difference between the passenger compartment temperature and the outside temperature or the outside temperature and the blower (49) is controlled based on an inside air ratio. [10] The method of claim 7, further comprising: g) determining whether a release condition occurs or the time during which the operation of the compressor (45) is reduced is greater than or equal to a maximum time (S170), wherein steps b) to e) are repeated if, in step g), the release condition does not occur or the time elapsed in reducing the operation of the compressor (45) is shorter than the maximum time. [11] The method according to claim 10, in a case where in step b) the evaporator temperature is greater than or equal to the allowable temperature or in step g) the release state occurs or the time elapsed in reducing the operation of the compressor (45) is greater than or equal to the maximum time, further comprising: h) increasing the operation of the compressor (45) according to a target increase rate of the operation of the compressor (45) (S180); i) determining whether the operation of the compressor (45) is lower than a target operation of the compressor (45) (S190); j) determining whether the evaporator temperature is higher than a second target temperature when the operation of the compressor (45) is lower than the target operation of the compressor (45) (S200); and k) controlling the temperature control flap (47), the inlet flap (48) and the blower (49) so that the temperature of the air supplied to the passenger compartment is lowered when the evaporator temperature is higher than the second target temperature (S210). [12] The method according to claim 11, wherein steps h) to k) are repeated if the evaporator temperature in step j) or step k) is less than or equal to the second target temperature. [13] The method of claim 11, wherein in step k) the inlet flap (48) is controlled based on the difference between the passenger compartment temperature and the outside temperature or the outside temperature and the blower (49) is controlled based on the inside air ratio. [14] The method according to claim 11, wherein the controlling of the compressor (45) in step i) is terminated when the operation of the compressor (45) reaches the target operation of the compressor (45).

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