JP2019055771A5

JP2019055771A5 -

Info

Publication number: JP2019055771A5
Application number: JP2018164570A
Authority: JP
Filing date: 2018-09-03
Publication date: 2021-09-30
Anticipated expiration: 2038-09-03

Description

かみ合いスリーブ３８は、駆動ギアホイール３４に関連付けられており、公知の作動モードによって、所定のギアのかみ合いのため、駆動ギアホイール３４の一つをプライマリシャフト２４にその都度接続するように、電子制御ユニット４０の制御の下、油圧、電動、又は電気機械アクチュエータ（図示されていないが、公知の類いのもの）によって制御可能である。 The meshing sleeve 38 is associated with the drive gear wheel 34 and is electronically controlled by a known mode of operation to connect one of the drive gear wheels 34 to the primary shaft 24 each time for predetermined gear meshing. Under the control of the unit 40, it can be controlled by hydraulic, electric, or electromechanical actuators (not shown, but of the known kind).

時間ｔ_２で摩擦クラッチ２２は完全に切り離され、ひいては熱機関１２がプライマリシャフト２４から切り離される。この時間から次の時間ｔ_３にかけて、現在のギアが解放されて、新しいギアがかみ合いスリーブ３８の適切な作動によってかみ合わされる。時間ｔ_２から時間ｔ_３の期間の間、合計トルクは、その値はまだＣ_２と同等であり、モータ１６のみによって伝達されている。 Friction clutch 22 at time _{t 2} is completely separated, hence the heat engine 12 is disconnected from the primary shaft 24. Over this time to the next time t _3, the current gear is released, the new gear is engaged by the proper operation of the engagement sleeve 38. During the period from time t ₂ to time t ₃ , the total torque, whose value is still _{equivalent to C 2} , is transmitted only by the motor 16.

同様に、時間ｔ_３から時間ｔ_４の期間の間の、熱機関１２のトルクＣ’_Ｔの増加勾配（これは電気モータ１６のトルクＣ’_Ｅの減少勾配と同等である）の、時間ｔ_４から時間ｔ_５の期間の間の、熱機関１２のトルクＣ’_Ｔの増加勾配に対する比は、５から１５の間である。つまり、「トルク交差」フェーズ（すなわち、電気モータのトルクが減少され、同時に熱機関のトルクが増加されるとき）での熱機関１２のトルクＣ’_Ｔの増加勾配は、電気モータがもはやトルクを伝達しない最終フェーズでの熱機関のトルクの増加勾配より５倍から１５倍大きい。例として、時間ｔ_０から時間ｔ_１、および時間ｔ_４から時間ｔ_５の期間での、熱機関１２のトルクＣ’_Ｔの減少／増加勾配は、０．１Ｎｍ／ｍｓから１Ｎｍ／ｍｓの間であってもよい一方、時間ｔ_１から時間ｔ_２、および時間ｔ_３から時間ｔ_４の期間での、熱機関１２のトルクＣ’_Ｔの減少／増加勾配は、１．５Ｎｍ／ｍｓから５Ｎｍ／ｍｓの間であってもよい。 Similarly, during the period from time t ₃ time t _4, 'increasing slope of _T (which torque C of the electric motor 16' torque C of the heat engine 12 which is the equivalent to the decreasing gradient of _E), the time t between ₄ and a period of time t _5, the ratio increasing slope of the torque C _'T of the heat engine 12 is between 5 and 15. In other words, "torque crossing" phase increase gradient of the torque C _'T of the heat engine 12 (ie, reduced torque of the electric motor, when the torque of the heat engine is increased at the same time), the electric motor is longer torque It is 5 to 15 times larger than the increasing gradient of the torque of the heat engine in the final phase of non-transmission. As an example, from the time from _{t 0} time _{t 1,} and time _{t 4} at a period of time _{t 5,} decreases / increases the gradient of the torque C _'T of the heat engine 12 is between 0.1 Nm / ms of 1 Nm / ms in one which may be, for a period of time _{t 1} from the time _{t 2,} and the time _{t 3} from the time _{t 4,} decrease / increase gradient of the torque C _'T of the heat engine 12, 5 Nm from 1.5 Nm / ms It may be between / ms.

Claims

A method of controlling the gear shift phase in a hybrid vehicle,
The vehicle includes a heat engine (12), between the heat engine (12) and the drive wheels of the vehicle (30), the torque to the drive wheel (30) from the heat engine (12) _(C T, arranged in order to transfer the C _'T), automated manual transmissions comprising a plurality of gears (14), in addition to, or instead of, the heat engine (12), said drive wheel (30) Equipped with an electric motor (16) arranged to transmit torque ( _CE , _C'E).
The automated manual transmission (14) uses a gearbox (20) having a plurality of gears and a drive shaft (26) of the heat engine (12) as a primary shaft (24) of the gearbox (20). A friction clutch (22) arranged between the heat engine (12) and the gearbox (20) is provided so as to be twisted and connected.
The method is
a) A step of estimating the initial torque value (C ₁ ) transmitted to the drive wheels (30) by the heat engine (12), and
b) A step of calculating the maximum torque value that can be transmitted to the drive wheels (30) by the electric motor (16) at the time (t ₀ ) at which the initial torque value (C _{1) is estimated.}
c) A step of comparing the maximum torque value with the initial torque value (C _{1), and}
d) the maximum torque value is the initial torque value (C ₁₎ and at least equal to or, depending on whether the initial torque value (C ₁₎ is less than, and performing a first torque control or the second torque control Prepare,
The first torque control is performed in order.
e) In the first period _(t 0 -t _1), wherein the friction clutch (22) gradually disconnect City, simultaneously, torque transmitted to the driving wheel (30) by said heat engine (12) ( C _T ) is gradually reduced from the initial torque value (C ₁ _{) to zero, and the torque (CE} ) transmitted to the drive wheels (30) by the electric motor (16) is transferred to the heat engine (12). ) And the total torque ( _CT + _CE ) transmitted to the drive wheels (30) by the electric motor (16) from zero to a constant value equivalent to the initial torque value (C _1). Steps that gradually increase to the initial torque value (C _1),
f) In the second period (t _{1 −} t ₂ ), the friction clutch (22) is disengaged, and the electric motor (16) is applied to the drive wheels (30) to be equivalent to the initial torque value (C _1). The step of releasing the current gear and engaging the new gear while transmitting the _{constant torque (CE} ), which is the value,
In g) the third period _(t 2 -t _3), wherein the friction clutch (22) is gradually engaged, at the same time, torque transmitted to the drive wheel (30) by said heat engine (12) _{(C T} ) Gradually increases from zero to the initial torque value (C ₁ _{), and the torque (CE} ) transmitted to the drive wheels (30) by the electric motor (16) is applied to the heat engine (12). And the initial torque value so as to keep the total torque ( _CT + _CE ) transmitted to the drive wheels (30) by the electric motor (16) at a constant value equivalent to the initial torque value (C _1). With a step that gradually decreases from (C _{1) to zero,}
The second torque control is performed in order.
e') In the first period (t _0- t ₁ ), the friction clutch (22) is gradually disengaged, and at the same time, the torque (C') transmitted to the drive wheels (30) by the heat engine (12). the _T), gradually to the initial torque value from _{(C 1),} the electric motor (16) the drive wheel (30) enables pre Symbol maximum torque value equivalent to the decreased torque value transmitted by the _{(C 2)} Steps to decrease and
f') In the second period (t _1- t ₂ ), while the friction clutch (22) is still being gradually disengaged, it is transmitted to the drive wheels (30) by the heat engine (12). The existing torque ( _C'T _{) is gradually reduced from the reduced torque value (C 2} ) to zero with a decreasing gradient larger than the gradient of the above-mentioned step e') , and is driven by the electric motor (16). 'the _(E, the heat engine (12) and the total torque that the electric motor (16) is transmitted to the drive wheel (30) (C torque C)' to be transmitted to the wheel (30) _T + C _'E ) and so as to maintain a constant value equal to the reduced torque value (C _2), the steps of gradually increasing to the reduced torque value from zero (C _2),
g ') a third time period _(at t 2 -t _3), said friction clutch (22) is disconnected, wherein the reduced torque value to the electric motor (16) is the drive wheel (30) _(C 2) While transmitting the same constant torque ( _C'E ) as, the step of releasing the current gear and engaging the new gear,
h') In the fourth period (t _3- t ₄ ), the friction clutch (22) is gradually engaged, and at the same time, the torque (C) transmitted to the drive wheels (30) by the heat engine (12). _'T) the zero reduces torque value (C ₂₎ is gradually increased to the electric motor (torque transmitted to the driving wheel (30) by 16) (C' of _E), the heat engine (12) and to maintain the same constant value and the total torque transmitted _{_{(C 'T + C' E}} ) the decreasing torque value _{(C 2)} to said drive wheel (30) wherein the electric motor (16) , The step of gradually decreasing from the reduced torque value (C _{2) to zero,}
i') In the fifth period (t _4- t ₅ ), the torque (30) transmitted by the heat engine (12) to the drive wheels (30) while the friction clutch (22) is still engaged. _C'T ) is provided with a step of gradually increasing _{from the decreasing torque value (C 2} ) to the initial torque value (C ₁ ) with an increasing gradient smaller than the gradient of the above-mentioned step h').
How to control the gear shift phase in a hybrid vehicle.

In the second torque control, the second period of decreasing gradient of the torque (C _'T) of _(t 1 -t ₂₎ the heat engine between (12), the first period _{(t 0} - ratio decreasing gradient of the torque (C _'T) of the heat engine (12) between t ₁₎ is between 5 and 15, the method of claim 1.

In the second torque control, the increase gradient of the torque (C _'T) of the fourth period the heat engine between _{_{(t 3 -t 4) (12}} ), the fifth period _{(t 4} - ratio increasing slope of the torque (C _'T) of the heat engine (12) between t ₅₎ is between 5 and 15 a method according to claim 1 or claim 2.

Reduction of the torque _(C T) of the heat engine (12) in the first period in the first torque control _(t 0 -t ₁₎ and said third period _(t 2 _-t 3) low / The method according to any one of claims 1 to 3, wherein the increasing gradient is between 1.5 Nm / ms and 5 Nm / ms.

Decrease in torque (C _'T) of the said in the second torque control the second time period _(t 1 -t ₂₎ and the fourth period the heat engine at _{_{(t 3 -t 4) (12}} ) The method according to any one of claims 1 to 4, wherein the / increasing gradient is between 1.5 Nm / ms and 5 Nm / ms.

Decrease in torque (C _'T) of the said in the second torque control first period _(t 0 -t ₁₎ and the fifth the heat engine in the period _(t 4 -t ₅₎ (12) The method according to any one of claims 1 to 5, wherein the / increasing gradient is between 0.1 Nm / ms and 1 Nm / ms.

A transmission system (10) for a hybrid vehicle, wherein the vehicle has the heat engine (12) between the heat engine (12) and the drive wheels (30) of the vehicle. ) torque to the drive wheel (30) from (C _T, arranged in order to transmit the _C _'T), automated manual transmissions comprising a plurality of gears (14), said heat engine (12) In addition or instead, the drive wheels (30) are provided with an electric motor (16) arranged to transmit _{torque (CE} , _C'E).
The automated manual transmission (14) twists and connects the gearbox (20) and the drive shaft (26) of the heat engine (12) to the primary shaft (24) of the gearbox (20). A friction clutch (22) arranged between the heat engine (12) and the gearbox (20).
The transmission system further the heat engine (12), electronic control means for managing the operation of the automated manual transmission (14) Contact and the electric motor (16) and (18, 40, 42) The electronic control means (18 , 40, 42) is programmed to control the gear shift phase by performing the method according to any one of claims 1 to 6.
Transmission system for hybrid vehicles (10).

The transmission system according to claim 7, wherein the electric motor (16) is connected to a secondary shaft (28) of the gearbox (20).

The transmission system according to claim 8, wherein the electric motor (16) is arranged coaxially with the secondary shaft (28) of the gearbox (20).