KR100836124B1 - Change of system for transmission - Google Patents

Abstract

A shift system of an automatic transmission is provided to improve the driving efficiency and traveling performance of a vehicle by measuring the weight of the vehicle without an additional sensor and choosing a shift pattern corresponding to the weight of the vehicle. In an automatic transmission conversion method for measuring the state of a vehicle and determining the shift timing of a transmission unit by operation of a TCU(Transmission Control Unit) receiving a measured value, a shift system of the automatic transmission controls the transmission by selecting a shift pattern map of the transmission unit by using the calculated weight of the vehicle as a control element. A vehicle weight calculation method comprises a step for measuring tire pressure of the vehicle(S100) and a step for calculating reference tire pressure and the weight of the vehicle by using the measured tire pressure, checking whether a starting key is inserted or not and a door is opened or closed, and measuring the fuel amount of a fuel tank(S200).

Description

Transmission system of automatic transmission {Change of system for transmission}

1 and 2 show a transmission system of an automatic transmission according to the prior art.

Block Diagram,

3 is a block diagram showing a transmission system of an automatic transmission according to the present invention;

Figure 4 is a weight correction step used in the transmission system of the automatic transmission according to the present invention

Explanatory drawing which shows.

The present invention relates to a transmission system of an automatic transmission. The automatic transmission measures a vehicle weight without adding a sensor and selects a shift pattern corresponding to the measured vehicle weight to increase driving performance of the vehicle and improve product performance and economy. The invention relates to a shift system.

Transmissions are widely used in machinery that converts rotational speeds of power sources into other speeds, such as automobiles, ships, and generators.

In particular, the transmission device used in the vehicle is installed between the engine and the wheel to perform a function to smoothly and safely drive by converting the driving force of the engine appropriately according to the progress of the vehicle.

Such a transmission device is divided into a manual transmission for shifting at the driver's will and an automatic transmission for automatic conversion by various sensors. It is used.

In the automatic transmission, when the output of the engine is transmitted through the torque converter via the oil to the clutch unit, the hydraulic unit converts the hydraulic pressure of the oil into the rotational force of the shaft, and the rotational force of the shaft is reduced and reversed through the planetary gear device. Thus, the rotational force is transmitted to both wheels.

A general vehicle is equipped with the automatic transmission of the above structure to automatically shift gears according to the traveling speed of the vehicle to run in the optimal driving state, in particular the automatic transmission vehicle is variable in accordance with the driver's accelerator pedal opening amount And after the target shift stage is set according to the shift pattern diagram stored / restored according to the vehicle speed and stored in the memory, the shift to the target shift stage is satisfied.

Hereinafter, an automatic transmission shift system and a problem thereof according to the prior art will be described with reference to the accompanying drawings. 1 and 2 are block diagrams showing a transmission system of an automatic transmission according to the prior art.

As shown in FIG. 1, a conventional automatic transmission for a vehicle is determined by a TPS sensor for detecting an opening amount of a throttle valve by an axle operation of a driver, and an OPS sensor for detecting a rotational speed of an output shaft of an automatic transmission. That is, the conventional automatic transmission inputs the signal of the TPS (throttle valve opening) sensor S3 and the OPS (transmission output shaft rotational speed) sensor S5 to the TCU processor S7, and the TCU processor S7 calculates and shifts the shift. It is programmed to determine the operation time of the unit (S8).

However, the conventional automatic transmission operates when the driver of a car full of cargo steps on the excel deeply to increase the amount of opening of the throttle valve to obtain sufficient output to carry the cargo. Although the TCU output is sufficient even if the driver of a car running a car with no cargo is stepped on the excel deeply to increase the opening amount of the throttle valve, the TCU outputs it even though the output is insufficient. In order to increase the speed of the gears, the gear shift time is delayed, so unnecessary waste of fuel and excessive smoke are generated.Therefore, there is no means to measure the weight change of the vehicle. Was done.

In order to solve the above problems, a system for detecting a vehicle weight by a separate sensor and reflecting the same in a shift pattern determination has been introduced. In the block diagram of FIG. 2, an example thereof is described. Referring to this, first, a road detection sensor S2 which grasps a weight of a vehicle by a weight sensor S1 measuring a weight of a cargo and grasps a state of a road surface And the information is collected and input to the TCU processor to calculate and shift the values of the TPS (S3) and the OPS (S4) so that the shift timing can be changed by the signal (S71) of the displaced TCU processor. .

However, when measuring the weight of the vehicle using the weight sensor as described above, there is no way to compensate for the error when the distance between the load and the axle occurs due to the aging of the spring / shock absorber, additionally There was a problem in that it is required to secure the space for mounting the sensor by attaching the sensor, and additional wiring is required due to the need for wiring by adding the sensor.

The present invention is to solve this problem, by measuring the vehicle weight without adding a separate sensor and by selecting a shift pattern corresponding to the measured vehicle weight to improve the driving performance and driving performance of the vehicle, to ensure the product performance and economy The purpose is to provide a transmission system of an automatic transmission.

In order to solve the above problems, the automatic transmission conversion method for measuring the vehicle state and determining the shift time of the shift unit by the calculation of the TCU received the measurement value, the pressure measuring step of measuring the tire pressure of the vehicle and The tire pressure measured in the pressure measuring step, whether or not the ignition key is inserted / not inserted, the door open / closed, and the fuel amount of the fuel tank are measured to calculate the reference tire pressure and the weight of the vehicle. Including the weight of the vehicle as a control element characterized in that for controlling the transmission by selecting a shift pattern map of the shift unit.

Hereinafter, the structure of the present invention will be described in detail with reference to the accompanying drawings. However, the description of the same configuration as the prior art will be omitted.

Figure 3 is a block diagram showing a transmission system of the automatic transmission according to the present invention, Figure 4 is an explanatory view showing a weight correction step used in the transmission system of the automatic transmission according to the present invention.

As shown in Figures 3 and 4, the present invention is to measure the vehicle state, and in the automatic transmission conversion method for determining the shift time of the shift unit by the calculation of the TCU received the measurement value, the tire pressure of the vehicle Pressure measurement step (S100) to measure, the tire pressure measured in the pressure measurement step (S100), and whether the start key is inserted / not inserted, whether the door open / closed and the fuel amount of the fuel tank to measure the reference tire pressure and the vehicle It characterized in that to control the transmission by selecting a shift pattern map including the weight of the vehicle calculated through the weight correction step (S200) to calculate the weight of the control element.

The shift time is determined in consideration of the vehicle weight by the above configuration. Unlike the conventional method of measuring the weight of the vehicle using an additional sensor, the pressure is detected in the pressure measurement step S100 of measuring the pressure of the vehicle tire. The vehicle weight is calculated through the weight correction step S200 of calculating the vehicle weight by analyzing the data, and the shift time map is controlled by selecting a shift pattern map corresponding to the calculated current vehicle weight.

When measuring the pressure of the tire in the pressure measurement step (S100), it is reasonable to match the two pieces of information of the current vehicle weight and tire pressure, and to store the two values in a nonvolatile memory (current vehicle weight, current The tire pressure in the weight is always calculated and stored), and the tolerance weight at the time of shipment of the vehicle is determined, and the current tire pressure is determined by the maintenance guide or inputted in GST to initialize the current vehicle weight and the tire pressure at this time.

The value measured in the pressure measurement step S100 is transmitted to the weight correction step S200 to accurately correct the current vehicle weight according to the changing vehicle condition.

When the pressure value measured by the natural tire pressure change in the pressure measurement step (S100) is changed, in the weight correction step (S200), the ignition key is not inserted and the ignition key is not inserted and the door in the door closed state (S10). The tire pressure is corrected at the transition to the open state (S20), and the vehicle weight is increased by the tire pressure increase and decrease at the transition to the non-insertion of the ignition key and the door closed state (S10). It is reasonable to carry out correction.

In other words, when the door or the trunk is opened while the ignition key is not inserted, when no one is in the car, the tire pressure is transmitted in the pressure measuring step S100 to maintain the vehicle weight value. The air pressure on the can be corrected.

In addition, if there is a change in the weight of the vehicle, that is, it is appropriate to carry out by correcting the vehicle weight according to the increase or decrease of the tire pressure when the transition from the start key insertion and the door open state (S40) to the start key insertion and door closed (S30) state, Since the weight of the vehicle is no longer changed when the door and the trunk door are closed, the weight of the vehicle is inferred from the weight of the vehicle when the door and the trunk door are opened or the increase or decrease of tire pressure when the door and the trunk door are closed. Can be calculated.

In addition, in the case of the ignition key insertion and door closing state (S30) and the ignition key insertion and door opening state (S40), the fuel weight of the fuel tank is checked to correct the vehicle weight according to the fuel consumption, and the tire pressure is adjusted when the vehicle is maintained ( In the case of S50), the vehicle weight is maintained and only the tire pressure is corrected. When the mechanic adjusts the tire pressure, the mechanic transmits the tire pressure to the weight correction step (S200) through the GST. Maintains the vehicle weight, the tire pressure is changed to a new value to update the tire pressure set at the current vehicle weight and the current vehicle weight.

In order to take into account the fuel reduction mass during driving to the current vehicle weight calculated through the above process, a voltage is received from the fuel tank gauge to correct the current vehicle weight with the fuel reduction mass, and the corrected current vehicle weight is transmitted to the TCU to transmit the current vehicle weight. The gearbox is controlled by selecting the shift pattern map according to the gearbox.

As described above, the present invention measures the vehicle weight without adding a separate sensor and selects a shift pattern corresponding to the measured vehicle weight to increase driving performance of the vehicle and to exhibit excellent effects of improving product performance and economy. to be.

Claims (5)

In the automatic transmission conversion method for measuring the vehicle state and determining the shift time of the shift unit by the calculation of the TCU received the measurement value, A pressure measuring step of measuring tire pressure of the vehicle; The vehicle calculated through the weight correction step of calculating the tire pressure and the weight of the vehicle by measuring the tire pressure measured in the pressure measurement step, whether or not the ignition key is inserted / uninserted, whether the door is opened or closed, and the fuel amount of the fuel tank. A shifting system of an automatic transmission including a weight of a vehicle as a control element and selecting a shift pattern map of a shift unit to control a shift. According to claim 1, wherein the weight correction step The tire pressure is corrected when the ignition key is not inserted and the door is closed and the ignition key is not inserted and the door is opened. And shifting the vehicle weight by increasing or decreasing the tire pressure when the vehicle is shifted from the non-insertion of the ignition key and the door to the non-insertion of the ignition key and the door to the closed state. According to claim 1, wherein the weight correction step A shifting system of an automatic transmission, characterized in that the vehicle weight is corrected according to the increase or decrease of the tire pressure when the starter key is inserted and the door is opened and the door is inserted and the door is opened. According to claim 1, wherein the weight correction step In the case of the ignition key inserted and the door closed state and the ignition key inserted and the door open state, the transmission system of the automatic transmission, characterized in that to check the fuel amount of the fuel tank to correct the vehicle weight according to the fuel consumption. According to claim 1, wherein the weight correction step When the tire pressure is adjusted when the ignition key is inserted and the door is closed and the ignition key is inserted and the door is opened, the transmission system of the automatic transmission is characterized in that the vehicle weight is maintained and only the tire pressure is corrected.

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