Hydraulic System, Function Overview
Hydraulic system, function overview
1 - Convertible top compartment cover cylinder
2 - Main cylinder
3 - Bracket cylinder
4 - Check valve S1
5 - Solenoid valve F3
6 - Pressure regulation valve D2
7 - ABS Hydraulic Pump
8 - Two-way valve W2
9 - Pressure regulation valve D1
- On-board voltage in contact = flow
- Solenoid valve with no current = return open
10 - Solenoid valve F2
- On-board voltage in contact = flow
- Solenoid valve with no current = return open
11 - Pump pressure
12 - Return pressure
13 - Line depressurized
14 - Two-way valve W1
15 - Solenoid valve F1
- On-board voltage in contact = flow
- Solenoid valve with no current = return open
Hydraulic function "open", raise bracket.
- Pump rotation direction: right
- Energized solenoid valve F2
- Energized solenoid valve F3
Convertible top compartment cover cylinder
The convertible top compartment cover cylinder rebound stages are charged with pressure via the energized solenoid valve F2. In this way, the convertible top compartment cover remains in closed position.
Main cylinder
Solenoid valves F2 and F3 are energized.
In this way, the main cylinder pressure stage and rebound stage are charged with pressure.
The pressure is evenly distributed to the cylinder rebound and pressure stages.
Because the pressure stage has the larger piston surfaces in comparison to the rebound stage, different forces can be generated with the same pressure ratios. The force acts on the pressure stage, whereby the cylinder moves out to the end stop and remains there. The convertible top remains tilted forward.
Bracket cylinder
Both bracket cylinders are activated by solenoid valve F3 during the rebound stage and raise the bracket.
Because it is activated simultaneously from both sides, the two-way valve W1 is permeable in the direction of the bracket cylinder rebound stage. Flow to the cylinder pressure stages is blocked by a check valve active on one side.
Through this, the bracket cylinders are retracted and the bracket is raised. Hydraulic oil displaced in the pressure stages is transferred into the hydraulic reservoir.
Component overview.
Hydraulic function "open", convertible top compartment cover open
- Pump rotation direction: right
- Energized solenoid valve F1
- Energized solenoid valve F2
- Energized solenoid valve F3
Convertible top compartment cover cylinder
The convertible top compartment cover cylinders are charged with pressure from both sides simultaneously by the energized solenoid valves F1 and F2 and in this way are run out.
The reason for this lies in the larger piston surface in the pressure stage and the different power ratios due to this resulting from the same same large pressure charge.
The convertible top compartment cover is raised.
Main cylinder
Solenoid valves F2 and F3 are energized.
In this way, the main cylinder pressure stages and rebound stages are charged with pressure.
Bracket cylinder
The two-way valve S1 is charged with pressure from both sides simultaneously via the energized solenoid valves F2 and F3. In this way, it is interconnected and the hydraulic pressure is directed to the bracket cylinder rebound stages.
Through this, the bracket cylinders remain retracted and the bracket is raised.
Component overview.
Hydraulic function "open", store bracket.
- Pump rotation direction: left
- Energized solenoid valve F1
- Energized solenoid valve F3
Convertible top compartment cover cylinder
The convertible top compartment cover cylinders are not activated.
The check valve contained within comes into use through the energized solenoid valve F1. This prevents the cylinder from becoming depressurized in the pressure stage and the convertible top compartment cover from being closed.
Main cylinder
The hydraulic pressure is channeled directly to the main cylinder pressure stages via check valve S1.
These remain run out and hold the convertible top in forward position.
The hydraulic pressure cannot vent in the system through two-way valve S1 and energized solenoid valve F3.
Bracket cylinder
Both bracket cylinders are directly charged with pressure via the pressure stage.
They are run out and the bracket is stored in the convertible top compartment.
In the rebound stage, displaced hydraulic oil is directed in the system and discharged into the hydraulic oil reservoir via F2.
Component overview.
Hydraulic function "open", store convertible top
- Pump rotation direction: right
- Energized solenoid valve F1
- Energized solenoid valve F2
Convertible top compartment cover cylinder
The convertible top compartment cover cylinders are charged with pressure simultaneously from both sides via energized solenoid valves F1 and F2.
The cylinders remain run out and the convertible top compartment cover is raised.
Main cylinder
The hydraulic pressure is channeled directly to the main cylinder rebound stage via solenoid valve F2.
These are retracted and store the convertible top in the convertible top compartment.
The hydraulic oil displaced from the pressure stage is directed into the hydraulic oil reservoir via F3.
Bracket cylinder
Both bracket cylinders are not activated.
Both bracket cylinders are partially retracted by the convertible top mechanics.
Component overview.
Hydraulic function "open", close convertible top compartment cover
- Pump rotation direction: right
- Energized solenoid valve F2
Convertible top compartment cover cylinder
The convertible top compartment cover cylinders are charged with pressure at the rebound stage via the energized solenoid valve F2.
They are retracted and in this way, the convertible top compartment cover is closed.
The hydraulic oil escaping from the pressure stage is directed into the hydraulic oil reservoir via F1.
Main cylinder
The hydraulic pressure is channeled directly to the main cylinder rebound stage via solenoid valve F2.
In that way, they remain retracted and leave the convertible top in the convertible top compartment.
Bracket cylinder
The bracket cylinders are not activated.
They remain partially retracted.
Component overview.
Hydraulic functions "close", raise convertible top compartment cover
- Pump rotation direction: right
- Energized solenoid valve F1
- Energized solenoid valve F2
Convertible top compartment cover cylinder
The convertible top compartment cover cylinders are charged with pressure from both sides simultaneously by the energized solenoid valves F1 and F2 and in this way are run out.
The convertible top compartment cover is raised.
Main cylinder
The hydraulic pressure is directed to both main cylinders in the rebound stages via solenoid valve F2. Both main cylinders remain retracted.
Bracket cylinder
The bracket cylinders are not activated.
They remain partially retracted.
Component overview.
Hydraulic functions "close", raise convertible top from convertible top compartment
- Pump rotation direction: right
- Energized solenoid valve F1
- Energized solenoid valve F3
Convertible top compartment cover cylinder
The convertible top compartment cover cylinders are not activated.
The check valve contained within comes into use through the energized solenoid valve F1. This prevents the cylinder from running idle in the pressure stage and the convertible top compartment cover from being closed.
Main cylinder
The pressure stages for both main cylinders are directly charged with hydraulic pressure via the energized solenoid valve F3.
The cylinders run out and the convertible top is raised.
Bracket cylinder
The bracket cylinders are not activated.
Both bracket cylinders are partially run out by the convertible top mechanics.
Component overview.
Hydraulic functions "close", raise bracket
- Pump rotation direction: right
- Energized solenoid valve F1
- Energized solenoid valve F2
- Energized solenoid valve F3
Convertible top compartment cover cylinder
The convertible top compartment cover cylinders remain charged with pressure from both sides simultaneously by the energized solenoid valves F1 and F2 and in this way remain run out.
The convertible top compartment cover remains raised.
Main cylinder
Both pressure stages for the main cylinder are charged simultaneously by the energized solenoid valves F2 and F3.
The cylinders remain run out and ensure the convertible top remains in forward position.
Bracket cylinder
The two-way valve S1 is charged with pressure from both sides simultaneously via the energized solenoid valves F2 and F3. In this way, it is interconnected and the hydraulic pressure is directed to the bracket cylinder rebound stage.
The bracket cylinders are retracted and the bracket is raised.
The hydraulic oil escaping from the pressure stage is directed into the hydraulic oil reservoir via W2.
Component overview.
Hydraulic functions "close", close convertible top compartment cover
- Pump rotation direction: right
- Energized solenoid valve F2
- Energized solenoid valve F3
Convertible top compartment cover cylinder
The convertible top compartment cover cylinders are charged with pressure at the rebound stage via the energized solenoid valve F2.
They are retracted and in this way, the convertible top compartment cover is closed.
The hydraulic oil displaced from the pressure stage is directed into the hydraulic oil reservoir via F1.
Main cylinder
Solenoid valves F2 and F3 are energized.
In this way, the main cylinder pressure stage and rebound stage are charged with pressure.
The cylinders remain run out and ensure the convertible top remains in forward position.
Bracket cylinder
The two-way valve W1 is charged with pressure simultaneously from both sides.
In this way, it is interconnected and the hydraulic pressure is directed to the bracket cylinder rebound stages.
The flow to the cylinder pressure stages is blocked by check valve S1 active on one side.
Through this, the bracket cylinders remain retracted and the bracket is raised.
Component overview.
Hydraulic functions "close", store bracket
- Pump rotation direction: left
- Energized solenoid valve F3
Convertible top compartment cover cylinder
The convertible top compartment cover cylinders are not activated because solenoid valve F2 is not energized.
They remain retracted and the convertible top compartment cover remains closed.
Main cylinder
The hydraulic pressure is channeled directly to the main cylinder pressure stage via check valve S1.
These remain run out and hold the convertible top in forward position.
The hydraulic pressure cannot vent in the system through two-way valve S1 and energized solenoid valve F3.
Bracket cylinder
Both bracket cylinders are charged with pressure in the pressure stage.
They run out and the bracket is stored on the convertible top compartment cover. The hydraulic oil displaced from the rebound stages is directed in the system and channeled into the hydraulic oil reservoir via F2.
Component overview.