Overview of The GRIP...



Get to know the basic components.

The GRIP (Governor to Reduce Idle and Pollution) Idle Management System has been installed to manage the time that the vehicle spends running in idle. Much of this time does not require the engine to run as the batteries can be used to power loads instead of the engine. By reducing the engine operation the GRIP not only saves fuel, excessive wear, extends vehicle life, it is also a benefit to the environment reducing emissions caused by unnecessary engine idle.

The GRIP works in conjunction with the vehicles CAN (Controller Area Network). The GRIP receives real time data on the vehicles functions including engine revolutions, transmission position, outside temperature, ignition positions and coolant temperature. Other data needed for the GRIP is received through sensors added when the system is installed in the vehicle. The controller of the GRIP is a PLC (programmable logic controller) that makes decisions based on the information it receives allowing it to start and stop the engine of the vehicle by simulating the operator changing the key position to the vehicle computer.

The GRIP will only control the vehicles engine to start and stop when the vehicles transmission is in the park or neutral position. The vehicle will not shut down when stopped in traffic, at a stop sign or traffic light provided the vehicles transmission is not put into the park or neutral position.

The Basic GRIP system contains the following:

The GRIP controller is the “brain” of the system. It receives data from the vehicle through the CAN (Controller Area Network) as well as all of the additional sensors added within the GRIP system. It receives information on engine revolutions, transmission status, battery voltage, coolant temperature, engine hours, interior and exterior climate, and hood position. It takes all of this information and decides when the vehicle can be shut down to avoid idle or when it needs to be running to meet the criteria set in the program as well as the operators input.

The screen shows the status of the vehicle as well as being the interface between the operator and the controller. The screen will display the status of the vehicle and indicate to the operator when a change is going to take place. The screen is also where the operator will set the desired climate within the cab as well as access options within the system if so equipped. The screen is only accessible when the vehicle is in park or neutral making it a hands free device.

Hood Pin
The hood pin is a safety feature for servicing the vehicle. The hood pin needs to make contact with a magnet installed on the hood in order for the GRIP system to control the vehicle. This is very important as service can be performed on the vehicle with the hood up. The GRIP will not be able to start the vehicle. The only way to start it at this point would be manually with a key. An icon will appear on the screen when the hood is up for additional safety.

Temperature Sensor
The temperature sensor transmits the temperature of the cabin to the controller. It is positioned in the vehicle to obtain an optimal reading to ensure accuracy for increased operator comfort.

The following optional equipment may be added to further reduce idle time and help improve operator comfort:

Anti-Theft (optional)
This feature allows the operator with a simple push of a button to leave the vehicle secured with keys in hand. The GRIP system will continue to monitor the vehicle. It will start the vehicle if it is needed to meet criteria set in program or the operators input. Only the operator returning with keys will be able to take vehicle out of anti-theft mode.

Solenoid (optional)
The solenoid is used in the system to latch the primary and auxiliary batteries. When the voltage in the primary battery reaches the lower threshold a signal is sent from the controller to the solenoid to latch to the auxiliary battery. The solenoid also latches the batteries together for start up of vehicle and when the vehicle is running for charging to ensure the vehicle is charging both batteries at the same time. This function allows for a longer period of shut down while maintaining performance of electronics, auxiliary components and the vehicles ability to restart.

Auxiliary Battery (optional)
An auxiliary battery is added to allow longer periods of shutdown while still maintaining electronic and auxiliary functions. It acts as a reservoir to the primary battery. Auxiliary battery is attached to the primary battery through the use of a solenoid.

Coolant Pump (optional)
An external coolant is added to the vehicle coolant system to keep already warmed coolant flowing through the vehicles heat exchanger. This feature keeps the vehicle’s cabin warm without the engine running allowing the engine to remain shut down for longer periods of time.

External Coolant Heater (optional)
The external coolant heater is a fuel fired heater that is added to the vehicles coolant system to heat the coolant to operating temperature without the vehicles engine running. This system will also run the coolant pump as needed. The external heater can be set to come on at set points seven days a week and also has a shift scheduler feature. It should be noted that when the external coolant heater is installed it uses the vehicles fuel tank for its fuel supply as well.

Alarm (optional)
The alarm can be added as an audible alert to let the operator know when the vehicle is going to start up or shut down. The alarm has different alerts for start up and shut down.

Current Sensor (optional)
A current sensor can be added to ensure that applications that require high current are met. An example would be an inverter. When high current loads are being demanded the current sensor indicates this to the controller. The controller would then start the vehicle to maintain the proper current needed for the application.

Heater Remote Start (optional)
A remote control can be added to the system so an operator can start the external coolant heater or the vehicle engine from outside the vehicle.