Controlling 5efhe secondary throttle bodies
This document details how to control the throttle plates for the larger runners. These should be closed when the RPM is below 5000 rpm. The controller will be the greddy emanage ultimate.
Mode of operation
A vacuum canister is used to store vacuum. Vacuum will be used as the power source for opening and closing the throttle plates. The inlet manifold will see positive pressure as the unit operates in a forced induction environment.
Our first objective is to allow only vacuum to reach the canister to keep it charged.This is easily accomplished by using the emanage to keep the vsv valve open only under the vacuum portions of the NCVS map.As you can see the vsv valve will be on only when there is vacuum in the manifol and therefore the canister is charge with vacuum under those conditions.
Now that the canister is charged with vacuum we move onto using this vacuum to control the actuator.
The Aux output function must be turned on to generate a a controllable output on pin 14.
The emanage is once again charged with controlling another VSV. However this VSV is slightly different in that it is a two-way switch. It switches the actuator to either vacuum via the vacuum canister or atmosphere. At 5000 rpm it switches the canister to atmosphere thus opening the secondary runners.
Below is a snap shot of the Aux output control map.
Finally I was able to locate a vsv valve capable of switching between vacuum and atmosphere. I discovered that these are found in the suzuki sumarai jeep to control a valve on the caburetor. There are also found on the AE91 corrolla. One of these units are very expensive if bought new.The black thing is actually a filter which stop stuff from getting into the system when the unit switches to atmosphere.. .
Here is the pic of the unit on a Suzuki Jeep..This unit cost $157 new from the suzuki dealer. The correct name is a two way solenoid valve. It simply switches a point to atmosphere or vacuum
Installation has progress very well.The NCVS channles are configured on the i/j parameter settings. The picture below show how channel A is configures as an NCVS or relay channel. Basical this channel pulls the device to ground hence the other wire of the device must be supplied with 12 volts
The Channel a or NCVS PIN 26 on connecter B. It is a White wire.The Auxillary output work by suppling 12 volts to the device therefore one end of the device must be grounded.This channel is also on connector B pin 14. It is a yellow wire.Jumper 10 must however be set to 2-3
The datalog facility allow you to check on the status of these channels. When the car is in vacuum the first solenoid should be open to let vacuum to the cannister. When there is positive pressure on the manifold it should be off. When the rpm is less than 5000rpm the two solenoid valve should be on supplying vacuum to the actuator to keep it open. When the engine reaches 5000rpm the solenoid valve is turned offh supplying the actuator with atmosphere
The relay channels and NCVS channels are very handing for controlling numerous things.Great care must be used not to overdrive these channels
Shown above is the actual configuration on the car. The vacuum canister is show along with the solenoid which supplies only vacuum to it. This solenoid goes to the NCVS channel
The two way vsv valve shows the vacuum feed from the vacuum store and and the vacuum feed to the actuator.This is the blue line
Successfuly manage to control the 5efhe actuator.The atuator now opens at an RPM determine by the emanage ultimate. As soon as the engine reaches the predetermine RPM the secondary runners open.
Test manifold used to watch the operation of the actuator versus rpm.
I was able to get the actuator off.Had to use a bolt cutter to cut a portion of the plate.