阅读说明：本技术 集成到发动机传动正时系统的p0系统和车辆 (P0 system integrated into engine transmission timing system and vehicle ) 是由 奥拉夫埃克哈德·韦伯 亚历山大·罗曼内兹 赵旭 杨炳春 刘浩 黄伯超 于 2018-06-08 设计创作，主要内容包括：提供一种集成到发动机传动正时系统的P0系统和包括该P0系统的车辆。发动机传动正时系统包括环绕进气凸轮轴链轮或正时皮带轮、排气凸轮轴链轮或正时皮带轮、曲轴链轮或正时皮带轮设置的第一正时链或正时皮带。P0系统包括电机组件和第二正时链或正时皮带,电机组件经由第二正时链或正时皮带传动连接到曲轴链轮或正时皮带轮。与现有的P0系统相比,本发明的P0系统与发动机传动正时系统集成到一起,电机组件经由正时链或正时皮带传动连接到曲轴链轮或正时皮带轮。这可以产生高的机械效率并避免带打滑。包括本发明的集成到发动机传动正时系统的P0系统的车辆可以在混合驱动模式、发动机驱动模式和纯电驱动模式下行驶。(A P0 system integrated into an engine transmission timing system and a vehicle including the P0 system are provided. The engine drive timing system includes a first timing chain or belt disposed around an intake camshaft sprocket or timing pulley, an exhaust camshaft sprocket or timing pulley, and a crankshaft sprocket or timing pulley. The P0 system includes a motor assembly and a second timing chain or belt, via which the motor assembly is drivingly connected to a crankshaft sprocket or timing pulley. In contrast to the prior P0 system, the P0 system of the present invention is integrated with an engine drive timing system, with the motor assembly being connected to a crankshaft sprocket or timing pulley via a timing chain or timing belt drive. This may result in high mechanical efficiency and avoid belt slip. Vehicles including the P0 system integrated into the engine transmission timing system of the present invention may be driven in a hybrid drive mode, an engine drive mode, and an electric drive mode.)

1. A P0 system integrated into an engine drive timing system that includes an intake camshaft sprocket or timing pulley, an exhaust camshaft sprocket or timing pulley, a crankshaft sprocket or timing pulley, and a first timing chain or timing belt disposed around the intake camshaft sprocket or timing pulley, the exhaust camshaft sprocket or timing pulley, the crankshaft sprocket or timing pulley, the P0 system including a motor assembly and a second timing chain or timing belt, the motor assembly being drivingly connected to the crankshaft sprocket or timing pulley via the second timing chain or timing belt.

2. The P0 system integrated into an engine transmission timing system of claim 1, wherein the second timing belt is a toothed belt.

3. The P0 system integrated into an engine transmission timing system according to claim 1, wherein the P0 system is arranged on the side of the engine transmission timing system as viewed in the extension direction of a crankshaft.

4. the P0 system integrated into an engine transmission timing system of claim 1, wherein the crankshaft sprocket or timing pulley comprises a first crankshaft sprocket or timing pulley and a second crankshaft sprocket or timing pulley coaxial with each other, the first timing chain or timing belt meshing with the first crankshaft sprocket or timing pulley, the second timing chain or timing belt meshing with the second crankshaft sprocket or timing pulley.

5. The P0 system integrated into an engine drive timing system of claim 1, wherein the electric motor assembly includes an electric motor, a speed reduction mechanism and a motor sprocket or timing pulley, the speed reduction mechanism disposed between the electric motor and the motor sprocket or timing pulley and drivingly connected to the crankshaft sprocket or timing pulley via the second timing chain or timing belt.

6. the P0 system integrated into an engine transmission timing system of claim 1, wherein the P0 system further includes a rechargeable battery pack and an inverter.

7. The P0 system integrated into an engine transmission timing system of claim 1, wherein in start and boost modes the motor assembly drives the crankshaft sprocket or timing pulley via the second timing chain or timing belt.

8. The P0 system integrated into an engine transmission timing system of claim 1, wherein in a power generation mode, the crankshaft sprocket or timing pulley drives the motor assembly via the second timing chain or timing belt to generate power.

9. The P0 system integrated into an engine transmission timing system of claim 1, wherein in generate mode, the motor assembly applies torque to a crankshaft through the second timing chain or belt in anti-phase with the crankshaft phase such that non-uniformity of the crankshaft is reduced.

10. A vehicle comprising the P0 system integrated into an engine transmission timing system of any one of claims 1-9, the vehicle not including an engine front end accessory system.

Technical Field

The invention relates to a vehicle driving system, in particular to a P0 system integrated into an engine transmission timing system and a vehicle comprising the P0 system.

Background

In a hybrid vehicle, there is a widely-existing expression of "Px hybrid", where "x" refers to the position of the motor. For example, P0 indicates that the whole power auxiliary equipment is arranged at the front end of the engine, P1 indicates that the motor is positioned at the tail end of the crankshaft of the engine and in front of the clutch, P2 indicates that the motor is positioned between the engine and the gearbox and close to the side of the gearbox, and the clutch is arranged between the motor and the engine.

For example, the existing P0 system has some disadvantages:

(1) The mechanical efficiency is low, and the belt is easy to slip;

(2) The friction of the engine (internal combustion engine) system is large;

(3) The torque transfer capacity is limited, and therefore the power of the motor is limited;

(4) boost and charging capabilities are generally limited;

(5) A large additional space is required.

For example, the existing P2 system also has some disadvantages:

(1) Relatively high costs;

(2) A large space is required between the engine and the gearbox, but the space available between the engine and the gearbox is extremely limited;

(3) there is no further support for improved engine performance.

Disclosure of Invention

The present invention has been made in view of the state of the art described above. It is an object of the present invention to provide a P0 system integrated into an engine transmission timing system to reduce or even eliminate at least one of the above disadvantages. It is another object of the present invention to provide a P0 system integrated into an engine transmission timing system that can further support the engine system to produce better performance.

There is provided a P0 system integrated into an engine drive timing system including an intake camshaft sprocket or timing pulley, an exhaust camshaft sprocket or timing pulley, a crankshaft sprocket or timing pulley, and a first timing chain or timing belt disposed around the intake camshaft sprocket or timing pulley, the exhaust camshaft sprocket or timing pulley, the crankshaft sprocket or timing pulley, the P0 system including a motor assembly and a second timing chain or timing belt, the motor assembly being drivingly connected to the crankshaft sprocket or timing pulley via the second timing chain or timing belt.

in at least one embodiment, the second timing belt is a toothed belt.

In at least one embodiment, the P0 system is arranged to the side of the engine transmission timing system, as seen in the direction of extension of the crankshaft.

In at least one embodiment, the crankshaft sprocket or timing pulley comprises a first crankshaft sprocket or timing pulley and a second crankshaft sprocket or timing pulley coaxial with one another, the first timing chain or timing belt meshing with the first crankshaft sprocket or timing pulley, the second timing chain or timing belt meshing with the second crankshaft sprocket or timing pulley.

In at least one embodiment, the electric motor assembly includes an electric motor, a speed reduction mechanism disposed between the electric motor and the motor sprocket or timing pulley and drivingly connected to the crankshaft sprocket or timing pulley via the second timing chain or timing belt, and a motor sprocket or timing pulley.

In at least one embodiment, the P0 system further includes a rechargeable battery pack and an inverter.

In at least one embodiment, the motor assembly drives the crankshaft sprocket or timing pulley via the second timing chain or timing belt in the start and boost modes.

In at least one embodiment, in the power generation mode, the crankshaft sprocket or timing pulley drives the motor assembly to generate power via the second timing chain or timing belt.

In at least one embodiment, in the power generation mode, the motor assembly applies torque to the crankshaft in anti-phase with the crankshaft phase through the second timing chain or belt such that non-uniformity of the crankshaft is reduced.

A vehicle is provided that includes a P0 system integrated into an engine transmission timing system according to the present invention.

In at least one embodiment, the vehicle does not include an engine front end accessory system.

In contrast to the prior P0 system, the P0 system of the present invention is integrated with an engine drive timing system, with the motor assembly being connected to a crankshaft sprocket or timing pulley via a timing chain or timing belt drive. This may result in high mechanical efficiency and avoid belt slip. Vehicles including the P0 system integrated into the engine transmission timing system of the present invention may be driven in a hybrid drive mode, an engine drive mode, and an electric drive mode.

drawings

FIG. 1 shows a schematic diagram of a P0 system integrated into an engine transmission timing system, according to one embodiment of the present invention.

Description of the reference numerals

1 an intake camshaft sprocket or timing pulley; 2 exhaust camshaft sprockets or timing pulleys; 3 crankshaft sprockets or timing pulleys; 4 a first timing chain or belt; 5, a motor component; 51 motor sprockets or timing pulleys; 6 second timing chain or belt.

Detailed Description

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the detailed description is intended only to teach one skilled in the art how to practice the invention, and is not intended to be exhaustive or to limit the scope of the invention.

referring to FIG. 1, one embodiment of the present invention provides a hybrid powertrain system that is a P0 system integrated into an engine transmission timing system.

The engine transmission timing system comprises an intake camshaft sprocket or timing pulley 1, an exhaust camshaft sprocket or timing pulley 2, a crankshaft sprocket or timing pulley 3 and a first timing chain or timing belt 4, wherein the first timing chain or timing belt 4 is arranged around the intake camshaft sprocket or timing pulley 1, the exhaust camshaft sprocket or timing pulley 2 and the crankshaft sprocket or timing pulley 3. The crankshaft sprocket or timing pulley 3 is mounted to or formed on the crankshaft of the engine and the crankshaft sprocket or timing pulley 3 are driven to rotate by the engine. A first timing chain or belt 4 transmits rotation of the crankshaft sprocket or timing pulley 3 to the intake camshaft sprocket or timing pulley 1 and the exhaust camshaft sprocket or timing pulley 2.

It should be understood that the positions of the intake camshaft sprocket or timing pulley 1 and the exhaust camshaft sprocket or timing pulley 2 may be interchanged.

The P0 system includes a motor assembly 5 and a second timing chain or belt 6, the motor assembly 5 being drivingly connected to a crankshaft sprocket or timing pulley 3 via the second timing chain or belt 6. Note that "drive connection" here means that the torque or power of the motor assembly 5 can be transmitted to the crankshaft sprocket or timing pulley 3 via the second timing chain or timing belt 6 and the torque or power of the crankshaft sprocket or timing pulley 3 can be transmitted to the motor assembly 5 via the second timing chain or timing belt 6.

The first timing chain or belt 4 and the second timing chain or belt 6 may be engaged to the same crankshaft sprocket or timing pulley, or to two crankshaft sprockets or timing pulleys coaxial to each other. The two crankshaft sprockets or timing pulleys, which are coaxial with each other, are preferably close to each other in the axial direction of the crankshaft. The second timing belt may be a toothed belt, which may efficiently transmit torque.

As shown in fig. 1, the P0 system is arranged on the side of the engine transmission timing system as viewed in the extending direction of the crankshaft, and therefore, the P0 system of the present embodiment may also be referred to as a side-set P0 system.

In one example, the motor assembly 5 includes a motor, a speed reduction mechanism connected between the motor and the motor sprocket or timing pulley 51, and a second timing chain or timing belt 6 is disposed around the motor sprocket or timing pulley 51 and the crankshaft sprocket or timing pulley 3.

It should be understood that the electric machine in the electric machine assembly 5 herein can operate as either an electric motor or a generator. The P0 system may also include a rechargeable battery pack and an inverter.

In the start-up and power-assist mode of the hybrid powertrain, the electric motor assembly 5 drives a crankshaft sprocket or timing pulley 3 via a second timing chain or belt 6, and the intake and exhaust camshafts are driven by the crankshaft. In the power generation mode, the crankshaft sprocket or timing pulley 3 drives the motor assembly 5 via the second timing chain or timing belt 6 to generate power.

A tensioner, such as an intelligent tensioner, may be provided on the second timing chain or belt 6 to adjust the slack and tight sides of the second timing chain or belt 6 in different operating modes, and an intelligent hydraulic switching element may be provided within the intelligent tensioner. The tensioner may be a two-way tensioner for a timing chain drive system or a pendulum mechanical tensioner for a timing belt drive system.

In the power generation mode, the unevenness of the crankshaft causes the timing chain or the timing belt to shake (chain force shake), at which time the motor assembly 5 can apply the reverse phase torque so that the load fluctuation and the resonance peak of the timing chain or the timing belt are significantly reduced.

Cylinder deactivation techniques may be applied to the intake and exhaust camshafts to reduce friction and pump losses. In addition, an electronic phase adjuster (electronic camshaft phaser) may be mounted to the camshaft, which may maintain the valve timing accuracy at a high level. A fully variable electro-hydraulic valve control system (UniAir) can be implemented by cylinder deactivation techniques and electronic phase adjusters to compensate for possible crankshaft-cam misalignment.

The sliding bearing on the crankshaft can be replaced by a rolling bearing such as a ball bearing and the like to reduce friction, which is very beneficial to a pure electric driving mode.

Existing engine front end accessory systems include mechanical (belt driven) compressors and water pumps, among others. In a vehicle including the hybrid system of the present embodiment, an electronic (electrically driven) compressor and a water pump can be used, so that the existing engine front end accessory system can be eliminated, and space can be saved.

In the hybrid power system, in the motor control and hybrid strategy algorithm, data processing including data storage and exchange can be executed in the cloud. In this way, the need for service and maintenance of the hybrid powertrain system can be predicted, and the timing system can be automatically optimized.

Some advantageous effects of the above-described embodiments of the present invention will be briefly described below.

In the prior art P0 system, the electric machine is mounted in the engine front end accessory system. The engine front end accessory system is spaced a distance from the engine transmission timing system in the direction of extension of the crankshaft. In the engine front end accessory system, an elastic belt or a v-ribbed belt is used instead of a toothed belt (timing belt), the torque transmission capability of the elastic belt or the v-ribbed belt is poor and cannot be used to transmit power, and a motor cannot be used for assisting power during the running of a vehicle. The vehicle cannot run in the pure electric drive mode.

In contrast to the prior P0 system, the P0 system of the present invention is integrated with an engine drive timing system, with the motor assembly connected to a crankshaft sprocket or timing pulley via a timing chain or belt. This may result in high mechanical efficiency and avoid belt slip.

The motor assembly 5 of the invention not only can provide power for the engine in a hybrid mode, but also can drive the vehicle to run by the motor assembly 5 and the engine together, and can also drive the vehicle to run by the motor assembly 5 only. Therefore, the P0 system of the present invention has better performance than the existing P0 system or P2 system.

the hybrid powertrain system of the present invention requires less space since the engine front end accessory system can be eliminated. Compared with the existing P0 system, the P0 system of the invention has better cost.

The hybrid power system can obtain better NVH performance and has better strength and durability.

Since crankshaft non-uniformity can be significantly reduced, a relatively smooth timing drive system can be produced.

Sensors may be provided in the timing system and by reading and analyzing sensor data and motor torque, wear and mechanical thermodynamic states of various engine components may be resolved.

Preventative maintenance may be achieved using motor data.

It should be understood that the above embodiments are only exemplary and are not intended to limit the present invention. Various modifications and alterations of the above-described embodiments may be made by those skilled in the art in light of the teachings of the present invention without departing from the scope thereof.