Onboard flow rate measurement

Due to recent fuel economy issues and changes in the environment surrounding automobiles, the introduction of a new testing regulation called RDE (Real Driving Emissions), which involves random and dynamic real-world driving, is being considered in Europe and domestically. Additionally, there is a growing demand for "instant" fuel consumption measurement during driving due to requests for transient measurement in vehicle development.
FP-4135 / DF-2200 is primarily targeted at returnless engines, which have become mainstream in gasoline vehicles. It achieves a balance of compactness and high functionality that can be installed in the engine room, enabling all types of fuel consumption measurement for internal combustion engines.
MF-3200 targets diesel engines with fuel return. It is equipped with a mechanism to handle return fuel, allowing for accurate measurement of fuel consumption. By cooling the return fuel with the fuel from the fuel tank, it can operate and measure without changing the actual operating conditions of the engine.

Common Matters

Please ensure that the engine is stopped before installing or removing the detector.
The engine is very hot immediately after stopping. Therefore, please ensure that the engine temperature has cooled down before proceeding with the installation or removal of the detector.

The on-vehicle Volumetric Flow Detector FP-4135 is a precision instrument.

• Please use within the environmental temperature range (flow detection part: -30 to +100 °C, signal processing part: -30 to +70 °C) with minimal temperature difference and within the specified vibration range.
• The vehicle-mounted Volumetric Flow Detector FP-4135 should be installed upright (within ±15 °).
  For securing the flow detector, please use the screws on the detector body or the included mounting brackets.
• Please install the detector at a position lower than the liquid tank.
  Make sure the detector is mounted lower than the liquid tank to prevent air (gas) from accumulating and to avoid creating a negative pressure.
  This does not apply when pressurizing and pumping fuel with a fuel pump.

Please refer to the following diagram and instructions to install it in the passenger seat of the vehicle.

1. Install the optional CT-0675 handle onto the DF-2200 vehicle-mounted fuel flow meter. Secure the optional CT-0675 handle with the included screws into the mounting holes located on the left and right sides of the DF-2200 vehicle-mounted fuel flow meter.

2. Please secure the DF-2200 vehicle-mounted fuel flow meter in the passenger seat of the vehicle. Connect the cable with the mounting hook to the CT-0675 protective handle, and stretch it to both sides of the seat as shown in the following diagram, ensuring it is firmly secured to prevent any unintended movement.

* Please do not install the DF-2200 main unit on the dashboard.
If the DF-2200 main unit is placed on the dashboard and used, it may fall during driving, posing a risk of injury or damage to the equipment.

To conduct measurements using the vehicle-mounted Volumetric Flow Detector FP-4135 on public roads, permission from the police or the Ministry of Land, Infrastructure, Transport and Tourism may be required. For details, please check with your nearest police station.

If the return fuel from the engine is above 60 °C, please cool the fuel by using a heat exchanger or similar method.

*As a construction machinery compatible specification, it is possible to increase the flow rate, enlarge the filter inlet, and enhance the rubber feet for DC12V or 24V.
When installing in a vehicle, be sure to insulate and secure the flow meter body so that it does not come into contact with the vehicle.

• Automobile manufacturers, construction machinery manufacturers, ship manufacturers, and other departments involved in engine design, research, and development.

• Department of fuel efficiency measurement for vehicles and ships during shipping inspections.

a) Excavation and Loading Operation Test
Measure the fuel consumption or power consumption when performing simulated excavation and loading operations with a standard bucket attached.

b) Break-in operation test
Measure the fuel consumption or power consumption when performing break-in operations using the boom and arm.

c) Running Test
Measure the fuel consumption or power consumption when driving on a flat straight road of paved surface or sufficiently compacted land.

d) Standby Test
For fuel energy-driven hydraulic excavators and hybrid hydraulic excavators, the fuel consumption at the minimum engine load idle speed is measured. For electric energy-driven hydraulic excavators, the power consumption required for standby operation specified by the manufacturer is measured without adding external load to the equipment coupled to the motor during standby.

(Citation: JCMAS H020: 2014 Construction Machinery - Energy Consumption Testing Methods - Hydraulic Excavators)

最終更新日:2021/11/30