Woodward APECS™ 0175 Engine Linear Actuator

Description

APECS™ 0175 linear actuators deliver precise positioning and form the foundation of a full electronic governing system. 

Many of the moving parts normally associated with electric actuators are eliminated, prolonging the MTBF (mean time between failure). 

The actuator design employs the principle of variable reluctance for consistent force over the entire stroke. 

This simple design of a proportional electric linear actuator utilizes a linear armature whose magnetic force is proportional to the input current to the coil. 

These actuators are easy to install by mounting near the fuel system with a direct connection to the fuel control rod or level. 

In most installations, the normal rotary-torotary connection is eliminated, resulting in a more trouble-free and accurate control system. 

APECS 0175 actuators are suitable for installation on diesel, gasoline, or natural gas engines with fuel system force requirements of less than 4.0 pounds (17.8 N) of force. 

Woodward also manufactures 0175 actuators integral to the engine block or fuel pump. 

 All-purpose, externally mounted 

 Pull or push actuation 

 Flange or base mount 

 Internal spring return to minimum fuel position 

 Corrosionresistant, plated steel housing, and base or flange 

 Precise engine speed control when used with APECS electronic controllers 

 Variety of mounting styles, plungers, terminations, and springs available

Applications

Provides proportional fuel control for construction, industrial, and agricultural equipment. 

1.75-inch (44.4 mm) diameter spring-return actuator, pull or push models, three spring types available.

Electrical Specifications

 Stroke 0.75 inch (19 mm) minimum 

 Force 3.5 lb (15.6 N) @ 23 °C (with SI spring, normal current) 

 Work Rating 0.3 lb-ft (0.4 N-m) 

 Nominal Rated Current 4.3 A (12 V [dc]); 2.3 A (24 V [dc]) 

 Response Time 30 ms for 10 % to 90 % of stroke 

 Resistance (nominal) 2.80 Ohms (12 V); 10.63 Ohms (24 V) 

Mechanical Specifications

 Operating Temperature –40 °F to +185 °F (–40 °C to +85 °C) 

 Vibration 15 G's (3 planes, 1 h/plane 50 Hz to 1000 Hz sweep; 

3 planes, 1 h/plane at first resonant frequency) 

 Shock Designed for US MIL-STD-810F, Method 516.5, 

Section 4.5.2: Procedure 1: 40 G peak