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Toyota unveils environmentally friendly lift trucks

Toyota Material Handling has introduced its new 8-Series line of lift trucks, which includes 3000 to 6500 lb (1360 to 2950 kg), cushion- and pneumatic- tire models.

Powered by Toyota-designed and manufactured 4Y and 1DZ-II gas and diesel engines, the new line features a closed-loop fuel system that automatically adjusts and optimizes the air-fuel ratio. The fuel sys- tem works in conjunction with a three-way catalytic converter to minimize such emissions as hydrocar- bons, nitrogen oxides, and carbon monoxide. As a result, says Toyota, the 8-Series lift trucks will pro- duce on average 70% less smog-forming emissions than the 2007 federal EPA standards.

The large spark-ignited 4Y engine that powers the 8-Series lift trucks has been granted official 2007 certification from the California Air Resource Board (CARB). The 4Y engine also meets CARB’s stringent 2010 emissions standard.

The CARB plan, which addresses emissions from off-highway equipment with large spark-ignition en- gines producing more than 25 hp (18.6 kW), will re- quire fleet owners to progressively reduce emissions through a variety of means including more stringent new engine emission standards, fleet-average emis- sion requirements for equipment users, and the de- velopment of optional low-emission certification guidelines for new engines. For California end users, the environmentally friendly Toyota 8-Series models configured to run on gasoline, liquefied petroleum, or compressed natural gas will count as 0.6 g/bhp·hr (0.8 g/kW·hr) toward CARB’s end-user fleet average calculation.

Toyota’s new 8-Series models also feature an elec- trical system that integrates weatherproof connectors and a sealed box to isolate critical controllers and relays from pressure washing, adverse weather condi- tions, and corrosive applications. An improved cool- ing system layout provides optimal airflow through the radiator and counterweight, which further re- duces the likelihood of overheating and helps to ex- tend the overall life of critical engine and hydraulic- system components. A fully sealed air intake system is located high on the overhead guard pillar, which helps to safeguard the intake system against con- tamination from low-lying dust and debris.

Toyota fully redesigned the chassis for the new 8- Series lift trucks, which resulted in reduced cosmetic sheet metal and plastic usage. The new design also incorporates a durable engine hood and stamped- steel side panels.

Critical 8-Series drivetrain components are pro- tected from abusive full-speed directional shift changes by Toyota’s newly developed Intelli-Shift op- tion, which allows such shift changes to occur only at

According to Toyota, the 8-Series lift trucks will produce on average 70% less smog-forming emissions than the 2007 federal EPA standards.

specified speeds. For brake pad-consuming high- cycle, short-run applications, a new optional wet brake system can provide exceptionally long life while reducing heat build-up, dust intrusion, and brake noise.

Increased visibility has been engineered into the 8- Series lift trucks with a dash-mounted digital display, low-profile cowl, and repositioned lower mast cross- member. A wide-view mast, angled overhead guard bars, and ergonomically designed operator assist grips also help to give the 8-Series better forward and upward visibility.

Ergonomics drove a number of design features for the new lift trucks, including a synchronized steering option that enhances operator comfort by automatically correcting misalignment between the angle of the steering wheel and turn angle of the steer tires. This feature also helps to maintain a con- sistent steering-wheel position for improved hand placement during operation. The steering wheel has also been downsized to help reduce operator effort, which helps to minimize operator shoulder strain.

A larger entry step and a curvilinear overhead guard help to reduce the operator’s effort during en- try and exit. Additional ergonomic improvements include expanded floor space and overall legroom, a swivel seat, mini-lever and joystick hydraulic controls with Ergo-Shift, and a rear-assist grip with horn but- ton. Non-cinching seatbelts also help to improve op- erator comfort by preventing the seatbelt from ratch- eting down on the operator’s waist, particularly dur- ing reverse travel.

The 8-Series lift trucks incorporate Toyota’s System

March 2007

SAE OHE 21

original equipment

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